If you're ever looking for someone to just talk to whilst feeling really low in yourself or you're experiencing suicidal thoughts, please take a look here:
https://en.wikipedia.org/wiki/List_of_suicide_crisis_lines
I know my response is pretty short because I'm no professional but getting yourself out of the house and getting some exercise is what helped me in a boost of confidence during my moments. There is a light at the end of the tunnel and the feeling is only temporary if you are willing to help yourself ultimately, there is always support along the way like mentioned.
@MaverickRat lets take this one a bit more serious