These days I am getting anxious every day with the amount of to-dos I have

Some time ago it was quite easy. I had good pay and comfortable work.
Things changed in the last couple of years.
Obviously I got more and more issues in relationship.
Then, the family costs increased. (Yes, I want to give everything to my kids, I know....)
I started to turn to my old dream to build businesses in my spare time.
Then circumstances changed and getting the same amount of income got harder.
This year there were couple of months when I had 3 full time jobs while I still worked on my business.
Of course you can't do all of these work properly. My quality of work was really bad. So I lost 2 of the jobs.
But in the meantime I started to work on multiple side projects to increase the chance of success.

Now I am at a point when I feel some days I just want to run out of this world. Looking at the list of how many things I should do make me anxious.
Beside that I feel totally alone. I can't talk about these things with anyone.
I think I think the escape from my problems turned against me. I created more problems than I had originally.
Now what?