I have a question?…. I would just like to ask a question that has been on my mind…how does someone give all there problems to God to let him handle it, yet work out your own salvation with fear and trembling.
I will try to answer your question.
It seems as if you are seeking to determine what God's role in our covenantal relationship with him is as opposed to what our role in our covenantal relationship with him is. Whereas God is our burden bearer, we do have a role to play as well, and, in the context of the verse that you mentioned, our role is obedience.
Phl 2:5
Let this mind be in you, which was also in Christ Jesus:
Phl 2:6
Who, being in the form of God, thought it not robbery to be equal with God:
Phl 2:7
But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
Phl 2:8
And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
Phl 2:9
Wherefore God also hath highly exalted him, and given him a name which is above every name:
Phl 2:10
That at the name of Jesus every knee should bow, of
things in heaven, and
things in earth, and
things under the earth;
Phl 2:11
And
that every tongue should confess that Jesus Christ
is Lord, to the glory of God the Father.
Phl 2:12
Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.
Phl 2:13
For it is God which worketh in you both to will and to do of
his good pleasure.
The "wherefore" of verse 12 links us back to that which immediately preceded it. Seeing how we are to have the mind of Christ, and seeing how Jesus humbled himself and became obedient unto death, we also need to seek to obey God as he works in us to both will and do of his good pleasure, and that is where the fear and trembling part comes in.
I noticed on your profile that this is your favorite Bible verse:
Psa 51:10
Create in me a clean heart, O God; and renew a right spirit within me.
When we come to God through Christ, he gives us a new heart and a new spirit so that we might walk in his statutes, keep his judgments, and do them.
Eze 36:26
A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
Eze 36:27
And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do
them.
It is our obedience to God, through the work of his Spirit in us, that is our role in this relationship. I hope that I conveyed that to you in a way that makes sense.