The problem is that many *people* tell me to do different things to protect my soul. Many books physically written by men (though potentially guided by God), tell me how to behave to protect my soul.
How do I choose? The ancient Hebrews worshiped their god, but Christians and Muslims have modified that old religion and formed many sub -sects: Roman Catholic, Greek Orthodox, and a host of more recent versions. Ancient Hindus had a different set of beliefs and many gods. Buddhists adapted / modified Hinduism, and there are many sub sects.. There are Sikhs, Confucianism, Taoists, Wiccans, and a host of smaller religions. There are the many dead religions from the Indo-European sky gods (Odin / Zeus / Jupiter), Sumerian, Ancient Egyptian, Mayan, Aztec etc.
Millions of intelligent people have believed in a wide range of different and incompatible things. How can I choose which *people* to believe?
All I can do is wait for God to show me in a way that is convincing to *me*. He hasn't done so yet.
That's an honest question. I believe you can pray, earnestly asking God to show you.
There is a fine line here though. In the Bible it does say that an "adulterous" generation seeks after "sign" and that no sign will be given other than what has already been revealed in His creation and written word. (on top of this, Jesus had already done miracles, yet they (Pharisees) wanted another sign.)
 Then certain of the scribes and of the Pharisees answered, saying, Master, we would see a sign from thee.
 But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it,....
However, I believe if you humble yourself before God and pray that He touch your heart and show you the truth, He will. The key is to humble yourself. God does not owe man anything. We willingly turn from Him and seek our own way. Yet, He asks us to come to Him, but God does hate pride.
 But he giveth more grace. Wherefore he saith, God resisteth the proud, but giveth grace unto the humble.
If you go before God with the attitude that you are righteous and are owed something from Him, He will resist you.
If you view yourself as a righteous man, needing nothing from God, that's probably what you'll get.
 And it came to pass, that, as Jesus sat at meat in his house, many publicans and sinners sat also together with Jesus and his disciples: for there were many, and they followed him.
 And when the scribes and Pharisees saw him eat with publicans and sinners, they said unto his disciples, How is it that he eateth and drinketh with publicans and sinners?
 When Jesus heard it, he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance.