Romans 12:2 tells us, "Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is — His good, pleasing and perfect will". The only decision God does not want us to make is the decision to sin or resist His will. God wants us to make choices that are in agreement with His will.
The key is wanting God's will, not our own. "Delight yourself in the LORD and He will give you the desires of your heart" (Psalm 37:4). If the Bible does not speak against it and it can genuinely benefit us spiritually, then the Bible gives us "permission" to make decisions and to follow our heart. If we truly seek God's will with a humble spirit and an open mind, He will reveal His will to us.
"For this is the will of God, your sanctification; that is, that you abstain from sexual immorality; that each of you know how to possess his own vessel in sanctification and honor, not in lustful passion like the Gentiles who do not know God; and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you" (I Thess. 4:3-6).
People often expend vast amounts of time, energy, and money trying to find "the will of God" for their lives. Here is one clear statement about one area that leaves no doubt what God's will is for all of us.