Ohman, art blocks definitely suck. I don't think there's really a good way to get rid of them forever-- I almost always experience an art block for at least a few days after each drawing lolsob-- but I've found a few things that usually get me going again!
1. Check out some of your favourite artists or pictures or images ever!
I know people say this a lot, and I was initially like hey man this is my work we're talkin' here; how is looking at someone else's stuff gonna help me
But it can really help when you're stuck and have no idea what to do! You might get a new idea for a drawing, or maybe want to try drawing something different (different time period, genre, pose, composition, etc), or even try emulating their style for fun!
People sometimes seem to draw inspiration from film and music, too. Or whatever floats your boat.
2. Check out improvement memes!
Sometimes we might be all like "man my art looks so shitty why can't it be sexy like that other person's", and this is really, really common! I think all artists experience this, actually! You kind of look at your own work and then look at someone else's, and you see this crazy gap in quality and feel like you could never get there!
But their art wasn't always sexy, you know. It's really neat when you look at a favourite artist's improvement over the past several years and see how far they've come! Kind of like "whoa, what? That artist used to draw shitty weeaboo stuff when they were younger, too, and now they're amazing?! Then there's hope for me yet!"
I mean yeah, sometimes we might look at some crazy-good artist and see that they've improved drastically and amazingly in like a year or something while we haven't really improved much, but not improving much this year doesn't mean you won't improve a ton next year!
I also heard this analogy once where it's like gaining EXP in Pokemon-- it's much faster and quicker during the early levels, but you're kind of level-grinding later on and it takes muuuch longer.
3. Draw ugly things on purpose!
Sometimes I get all worked up over being able to draw sexy people, and then when my drawings aren't sexy enough, I get frustrated.
Try drawing UGLY people! Go through every little gross detail of the face that you can think of; it also kinda helps with regards to developing varying expressions and facial structures.
Or I dunno, man; it's kind of fun to show people just get a laugh, too!
And then you can look at your regular drawings and then drawing sexy people will come easier to you. Or something like that.
4. Do art trades!
Knowing that someone's anticipating your drawing can kind of up the pressure, and pressure's sometimes a good thing. And since it isn't just for you, you might work a little harder!
Plus there's that extra incentive of getting a drawing from the other person! Nothing satisfies like giving and receiving sexy drawings!
Maybe you could colour someone else's drawing and/or they could colour your drawing!
It's really, really cool seeing what your drawings look like in another person's colouring style, and vice versa! Plus when you colour someone else's stuff, you can kind of feel the difference and even pick up some ideas from their drawings.
Like I remember doing a collab with this fantastic artist, and when colouring her stuff, it was like whoa, the eyes are smaller and the body is bigger! And I can never tell if there's something wrong with my drawings until months later, so that might be a heads up to me that maybe my drawings' proportions are a little off! And you can also really learn from how the other person's coloured your stuff, too! I learned quite a bit with regards to different ways to colour things.
6. Take a break and do something totally different!
Don't force yourself to draw if you really don't feel like it! People can sometimes feel like they have to draw for the sake or drawing or being popular, and that can really take the fun out of drawing. Draw whatever you want whenever you want, and make sure it's something you actually want to draw!
And yeah, sometimes we have those days when nothing we draw looks good at all, and it's really frustrating. Don't push yourself. Do something fun and come back to it later! Coming back to it later or after a good rest sometimes gives you a fresh eye, too, and then you can more easily pick out details that were really messing up the picture that you hadn't noticed before!
7. Don't let comparisons get you down!
Here, read this thing: 5 Steps to Ending Comparisons for Creatives!
You're your own person and have something only you can offer!
Whoa, tl;dr. But yeah, I hope some of that helped! Best of luck with the drawing endeavours; keep at it!