Many of my friends when going through trials in life seems to be shaking in their faith in God. This experience usually happens in most peoples lifes. Situations usually overwhelms the individual to cast doubt to the existence of God. When you find yourself in this situation, handle it well if not it could derail you from the right path. This usually the defining moments in life. This the time you exhibit how grounded your faith is.
The good news is that, there are verses in the bible that will help clear your doubts. Below are few of them. The verses are taken KJV.
John 1:1-4
1 In the beginning was the Word, and the Word was with God, and the Word was God.
2 The same was in the beginning with God.
3 All things were made by him; and without him was not any thing made that was made.
4 In him was life; and the life was the light of men.
John 14:6
6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
Colossians 1:15-17
15 Who is the image of the invisible God, the firstborn of every creature:
16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:
17 And he is before all things, and by him all things consist.
From the above verses it can be established that, God through Jesus Christ created all the things in the universe. Therefore your problem is a peanut in the eyes of the Lord. Wholly lean on the Lord. He is a solid foundation that would not shake during storm. In your doubting moments consult your bible. There more statements that establishes the faithfulness of our God. If he built the world in 6 days, and divided the sea for Moses and the Israelites to pass and could give his own son to reconcile the world with himself. Then he has what it takes to lift you out of your predicaments and your disappointments. Trust on him and pray based on his own promises and have a waiting heart and your problems would be solved.