Hit a slump.. how to get out of it?

Feel like i am going nowhere in life and nothing is going right and my mistakes undid the past hard work that i did to get here.. jobless and can't find a job in my industry for quite some time despite sending many applications and out of shape..

Used to be in a slump before in my teens as a bbfa with no aim in life but i got myself out of it and work toward it from nothing..

But this feels worse.. putting in effort and seeing everything i work for go down the drain.. more depressing than the first time round.

How to get out of this..