Your inward willingness to obey God is the way to know God's will for your life! Develop this by daily studying God's word and spending time with Him. God has the blueprints of our lives, not us. We are to rejoice in times of trials. Don't regret your past mistakes, just learn from them and realize that God uses them to as stepping stones to mold you according to His purpose for you and to build your character. God is a covenant God. Psalms 25:9 He leads the humble into what is right. John 7:17 If anyone has the willingness to do God's will, he will have discernment. Only His sheep know His voice. Those that are His sheep, her and obey him, not the world. For the world does not know His ways or His voice. So next time you go through the valley (i.e. hard times), remember that God is adding stepping stones to the ones you already have and is shaping you into the person that can carry out His will for you and fell blessed.