Again, good questions, Watcher.
There are so many 'truths.' How do we know what is real, and what will really help? How can we know that a truth we embrace today is completely true, and not just partly true, or even a total lie?
When Jesus walked the earth, He said that He was "the Way, the Truth, and the Life," John 14:6. He is the truth.
He promised that we could come to know truth through the Holy Spirit whom He would send to us:
John 15:16 "'And I will pray to the Father, and He will give you another Helper, that He may abide with you forever--the Sprit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you.'"
This is the Spirit of truth who comes in you when you ask Jesus Christ, the Son of God, to be your Lord and Savior:
Romans 8:9(b) "Now if anyone does not have the Spirit of Christ, he is not His."
Everyone who belongs to Christ, who has truly had a born-again experience, has the Spirit of truth in them.
This is that same Spirit whom Jesus promised would lead us and guide us into all truth:
John 16:13 "However, when He, the Spirit of truth, has come, He will guide you into all truth; for He will not speak on His own authority, but whatever He hears He will speak; and He will tell you things to come."
We also know that Jesus said to us that He will never leave us nor forsake us, Heb. 13:5, and that His sheep hear His voice, John 10:27.
If you belong to Christ, you have the right to hear His voice. Most often, He speaks through His word, the bible. The Holy Spirit wrote that bible through men. He NEVER contradicts Himself. Anything the Holy Spirit says will always be in agreement with the word of God. If anyone thinks they heard the Lord and what they heard is not in agreement with the bible, then that person did not hear God's voice.
Most often, the Lord leads by His word. Just by reading His word, He gives good counsel and direction.
But God can also speak to us directly, just as He did to Ananias when He told him to go to the street called Straight to pray for a man named Saul, Acts 9:11. He can convict us of sin as well, John 16:8. He can guide us in the right way, Psalm 32:7-8. He can direct our path--individually, letting us know that we are on the right path, especially when we compare it to His word, Psalm 119:105.
He promises that if we come to Him, He will take away our heavy burdens, Matthew 11:28-30. Most important, although the word of God says that we are all sinners, "For all have sinned and fall short of the glory of God," Romans 3:23, and even tells us that the result of sin is death, Romans 6:23, God offers us a way out:
Acts 16:31 "Believe on the Lord Jesus Christ, and you will be saved...."
It is important to believe ON the Lord, that is, trusting in Him completely. It is not good enough to just believe IN Him, because the word of God says that even devils believe in God and tremble, James 2:19, but they are not saved.
How to do this? We realize that we are sinners, and that we deserve death. We believe that Jesus came to die on a cross for us to take that death, as a substitute sacrifice, giving Himself in place of us. We ask Him to be our Lord and Savior, inviting Him to come into our hearts.
We ask Him to forgive us of our sins, and He does, completely: "If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from ALL unrighteousness," 1 John 1:9.
And we walk with Him, from day to day, asking Him to lead us, guide us, and direct us, as He has promised. We read His word, listening to His voice. And when we have a problem, we go to Him and ask for help.
Watcher, you are right that God can use counseling, books and other sources. But so many of these sources are filled with untruths, partial truths, and lies.
We have the Spirit of truth. We can go to Him, and ask Him to direct our lives.