Those that do not accept Christ as their Saviour are those that have need to fear. As the Bible tells us fear not "fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell".
God only comes with loud trumpets and waves of power
This is not necessarily true. Yes when He returns to this world He will indeed come with trumpets blowing and all eyes will see Him. When He comes to us personally it is quite often quietly, gently tugging at our heart, whispering soft calming words to us and yes filling us with a love and peace beyond all understanding.
There are too many things in this world that I can't control.
All these things are controlled by Him if we but let Him, in His time and in His way. We may not understand all of the time as to why we go through the things we do but it is for our good.
I just don't know how to make things better.
Let the Lord do this for you. Step out in faith in Him, trust Him not yourself or others.