Don't let others decieve you saying their religion is true, because Christianity is the only religion, the only true one. You need to understand the Christ Jesus died for your sins so you may be with our lord for the eternity to come. You may think I'm crazy saying these things but they have worked for me, I realised I was sinful and needed to repent and now I feel like a changed person. The only way you can feel better is to have faith and love your neighbor as yourself. If you have both you will be a very happy man even through suffering and persecution for you will understand that all things will be revealed and you will be rewarded for your good deeds.
First, realize that God loves you...
John 3:16 "For God so loved the world that He gave His only begotten Son that whosoever believeth in Him should not perish but have everlasting life."
Second, realize that everyone is a sinner...
Romans 3:23 "For all have sinned and come short of the glory of God."
Third, realize that sin has a price that must be paid...
Romans 6:23 "For the wages of sin is death, but the gift of God is eternal life, through Jesus Christ our Lord."
Fourth, realize that Jesus Christ died to pay your price...
Romans 5:8 "But God commendeth his love toward us in that while we were yet sinners, Christ died for us."
Finally, pray, ask Jesus Christ to be your Savior, and
claim his promise of eternal life...
Romans 10:13 "For whosoever shall call upon the name of the Lord shall be saved."
My friend, the most important thing in the world is knowing that your sins are forgiven and that you are prepared for eternity. Godbless and peace out.