"How do you Deal with Life Challenges When also Dealing with MH Issues??"

I consider that a "$64,000,000" question! (it used to be $64K, but y'know, rising cost of living...)

I think that's a challenge for anyone. I have heard "when you get depressed you fall behind, when you fall behind you get depressed" for example. All I have been able to do is juggle dealing with longer term issues while also dealing with short term objective challenges as best I know how: try to live a healthy lifestyle; don't isolate too much; have balance in things (such as a regular schedule with some down time); ask for help when needed (a hard step for me, always!); stand up for yourself as best you can; strive to remain optimistic; be aware of your limitations, triggers, etc. Double down on all the psychological and physical maintenance "stuff".

One of the biggest things imo is not letting judgmental people get to you. I have seen so many people's best efforts be dismissed as laziness, self-pity, etc. etc. by others who don't really understand the situation or who are just plain empathy challenged. It is useful to take people's feedback with a grain of salt.

I think many people are also afraid of being judged when the going gets tough, even if others turn out to be more understanding than we expect. It helps to remember that almost everyone goes through that.