Strengthening one's Imaan

Q: I was a non-Muslim girl with staying with parents. I left my home and parents without any reason. I left my home when my age was 17 and now I am 29 years old. I converted to Islam at the age of 18 and still am. I had stayed alone and still stay alone. I have went through many hurdles in my life and still going on. Many people used me for their benefits. Now a days I don't know why but my Imaan is getting weaker. It is not like that I don't trust Allah Ta'ala or have no more faith but due to my problems and not becoming any good things in life I am getting worried.

There is much more to say but don't know how should I open up as there is no one in my life to share my each good and bad things.

Hair dye

Q: Is it permissible to use hair dyes available in market in various shades? What are the instructions in Sharia regarding dying of hair? Please provide full details.