Here’s a good list on Decision making and God’s Will I found from Dr Friesen’s book.
1. Where God commands, we must obey.
2. Where there is no command, God gives us freedom and responsibility to choose.
3. Where there is no command, God gives us wisdom to choose.
4. When we have chosen what is moral and wise, we must trust the sovereign God to work all details together for good.
When God commands, we have to be obedient. When God doesn’t explicitly command something in scriptures and we are left with a grey area, God gives us freedom to figure it out. If there isn’t a commandment and we’re left with the freedom to choose, God gives us wisdom and we must rely on wisdom to make good choices? And finally when we’ve done our part, we have to trust that He ultimately works for the good of those who love him.
(Taken from: Johnnie Moore – What am I supposed to do with my life?)