firstly I think that you should never think about taking your own life. I know its eay for me to say but waheguru ji gave us this life so who are we to decide if it should be taken. Parji/ Penji im not sure which! I think that you should talk to some. Any one who you can honestly confide in. U said that simran helps when you are itting their doing it, Thats good so you can work on that. Whenever you feel deppressed or jus arngy with life repeat waheguru in your head or out load. It works!
Do paath whenever you can because that will calm you and put you you want at ease.
I hope i helped
Fateh Ji!