How do I Trust?

Lately, I have been bombarded with choices and decisions that will potentially effect my future. There are times when I am totally certain of something and then the next moment, that feeling goes away and I am back to stage 1 wondering what to do.
God's message in the Hebrew Bible is one of trust and full reliance on him. But in times like this, I see why Israel had so many problems trusting in the invisible God. There are times when God is silent, I feel at this point, that maybe he is. I have prayed earnestly that God would consume my mind and take these thoughts away and that he would hhandle this whole situation. But somehow, I come to a feeling that God is wanting me to stop hiding and get up and face this problem. But where does this lead me in my trust?
In II Kings, Asa is faced with an unimagineable problem. 1,000,000 Ethiopians are at his doorstep. Asa prays to God and says, "We rely on you..." and God delivers them from the impossible. But soon after, Judah is being threatened by neighboring Israel, and so who do you think Asa turns to? Not God, but try the King of Syria. God is furious with Asa, and rightfully so, considering that he just delivered him in probably the most miraculous victory in history. But am I so different from Asa? I have seen the rewards of reliance on God. But continually, I try to solve my own problems. Why? How is it that I can read those stories and not be changed to the core and find my trust in this God?

Psalm 22
"My God, my God, why have you forsaken me?
Why are you so far from saving me, so far from the words of my groaning?
My God, I cry out by day, but you do not answer,
by night, and am not silent.
Yet you are enthroned as the Holy One;
you are the praise of Israel.
In you our ancestors put their trust;
they trusted and you delivered them.
They cried to you and were saved;
in you they trusted and were not dissappointed."