Rom 10:9 ... if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.
How can you know you are forgiven? Simply pray this prayer out loud: "Father I repent of my sins, known and unknown. I ask your forgiveness for my sins. Wash me clean with the blood of Yeshua ("Jesus") and wrap me in His righteousness. Amen."
Your sins have just been washed away - they no longer exist. Satan will try to continue to make you feel guilty but don't let him. Whenever Satan reminds you of any past sins simply say out loud: "My sins have been washed away by the blood of Jesus and exist not more. Thank you Jesus." As you continuously do this it will eventually go away as Satan will realize he has been defeated.
Php 3:13-14 Brothers, I do not consider that I have made it my own. But one thing I do: FORGETTING WHAT LIES BEHIND and straining forward to what lies ahead, I PRESS ON TOWARD THE GOAL for the prize of the upward call of God in Christ Jesus.
Jas 4:7 Submit yourselves therefore to God. Resist the devil, and HE WILL FLEE FROM YOU.
One other thing that needs to be dealt with. Unforgiveness. Whenever you remember something someone has said or done that hurt you physically or emotionally, and it makes you angry toward them, then there is unforgiveness in your soul toward them. When this happens it is the Holy Spirit trying to help you deal with unforgiveness. Simply say this prayer out loud whenever you have this happen "Father I forgive [person(s)] for hurting me and I bless them. I ask that your blessings would also be upon them. Amen." Initially you may have the Holy Spirit show you a lot of different things that need to be prayed away. Eventually it will diminish though.
Here is what I recommend that people do:
Joh 14:21 Whoever has my commandments and keeps them, he it is who loves me. And he who loves me will be loved by my Father, and I will love him and manifest myself to him.
I have met Yeshua ("Jesus") a number of times over the past 25 years. He is real, He is alive, He has spoken to me, and I have spoken to Him. Each encounter was unexpected and unique. Search YouTube for "Jesus encounter" and you will see He has appeared to atheists, Jews, Muslims, etc...
John 8:23-24 Yeshua said to them, “You are from below; I am from above. You are of this world; I am not of this world. I told you that you would die in your sins, for unless you believe that I am he [the messiah, the Son of God] you will die in your sins.”
Matthew 10:37-38 [Yeshua speaking] Whoever loves father or mother more than me is not worthy of me, and whoever loves son or daughter more than me is not worthy of me. And whoever does not take his cross and follow me is not worthy of me.
Is Yeshua the most important thing in your life? How much time do you spend with Him every day? Is He your friend?
To "take up your cross" is to deny the desires (not the needs) of the flesh and be obedient to the laws and commandments of God. As you develop a relationship with Yeshua ("Jesus") you will hear from the Holy Spirit (Dreams, Visions, Words of Knowledge, Words of Wisdom, etc...) You must be obedient to what the Holy Spirit communicates to you without hesitation. If you are asked to do something, or told not to do something, the immediate answer is "Yes Lord", worry about the details later - He will lead and guide you in accomplishing anything you are asked to do as you do it.
Spend 30 minutes or more every day reading your Bible (reading out loud) slowly, taking your time, and meditating on the things you are reading. Start with Matthew and read to the end, then start at the beginning. I use the ESV, but the King James (not the "New" King James) is the most accurate translation as it is the ONLY translation that uses the Textus Receptus manuscripts.
Spend time in prayer every day (praying out loud), again taking your time and not rushing through them. Here are prayers I say every day. Modify them as you see fit for your situation and circumstances:
https://www.dropbox.com/s/t3e692qfrg2djho/Daily%20Prayers.pdf?dl=0
If you are willing to set aside the things that take up most of your time (TV, movies, gaming, Facebook, Internet, etc... you know what you spend most of your time doing), and dedicate three hours every evening to the Lord, within a few months if not sooner you will see a mighty move of God in your life. Develop the following routine and stick to it consistently:
Spend the first hour praying in tongues. Praying in tongues (out loud) is probably the most important thing I have learned to do. Since I started doing this I have had numerous dreams, visions, and even encounters with Yeshua. Here is a document that will help you understand and get started:
https://www.dropbox.com/s/yoo6e7yldff2z52/Pray%20in%20Tongues.pdf?dl=0
Spend the second hour waiting on the Lord quietly. This will help you learn how:
https://www.dropbox.com/s/u4vjs8pr5aphr66/Wait%20As%20Eagles.pdf?dl=0
Spend the third hour singing (out loud) praise and worship songs. These songs should mention the blood of Jesus, the cross, and/or attributes of the character and nature of God. Here are a few of my favorites (you can set it to shuffle play so they play in random order):
https://www.youtube.com/playlist?list=PL2kjGV_3m9rvKRac-6wFHNFWSlCJZnnhr
In addition to that I like to listen to "soaking" music at a low volume while praying, reading, or waiting on the Lord. Here is the music I use:
https://www.youtube.com/playlist?list=PL2kjGV_3m9rs2k20k6BTu7vtToECHgNYL