Can't recommend this enough! I always have trouble motivating myself to make new music, partly because it's hard to know where to start. But just in the past few weeks, I've already made four new tracks that I'm proud of. The weekly themes force you to think creatively (how can I make this sound "juicy"?!), and I have found myself using instruments and styles that I hadn't tried before.
What's really helpful is that it's not a competition, so there's no real pressure. You can just make something for the sake of making something. Plus, it's really fun to see what other composers come up with!
I highly recommend giving it a shot, especially if you're like me and need a motivational boost to get some practice in.