Hello Pea

I have seen you around here and there, and I have to say you seem like a pretty awesome person.
Especially now. You're acknowledging things have been really bad for you and acknowledging what was going on was wrong, and you have been trying and are still on your way to improving your life.
I see a few already posted a few suggestions. Asking others for help, writing in a notebook. All good suggestions already. The notebook I would definitely also put forth.
And as for asking friends/family to help, there is no shame in that. You'd still be doing it yourself. They can't be expected to have your back anyways 24/7. In a way, you could also see asking for help not as a weakness, but rather as a strength. It's another form of acknowledgement you have had and are having a difficult time. You need to have a variety of safety-levels to fall back on. Maybe not so much asking them for help to monitor you, but moreso that you are in touch with them. Communicate. Go with them when things are difficult. This is often a really good thing to have. Don't ask them or see them as monitoring-buddies (so to speak), but ask them and see them as friends and family. Places you can go to to talk to and with.
Since you asked for advice I'll give some of my own... I'm not sure this is helpful, but regardless, let's see.
Some people have indeed hobbies outside of work and whatnot more (unless sometimes their work is also their hobby). Things I think about as hobbies and fun things:
Drawing, painting, writing, roleplaying, talking to people (moreso in real life than online, I would suggest to you), making things like arts and crafts, gaming, coding (making websites, programs, games), etc.
I think, however, it's best you try all kinds of things. PFF EVEN POTTERY, I dunno! All kinds of things. See what is fun to you.
I think it's best moreso if the thing you enjoy is in some shape or form productive as well. See, gaming can be fun, but does it produce anything? (I mean besides achievements and whatnot.) Usually not. Whereas drawing/painting/writing can produce something. If it's traditional you have something to hold and touch. Something you can maybe put near your bed and wake up to it to see: You had made something.
I think that's important. Something you can see. Something that is tangeble to you.
Maybe this isn't for you, but maybe it is.
I hope it helps.
And take care
