Personally, I use Habitica for task tracking and habits. The nice thing is it's open source with a wide variety of extensions.

I use the Github plugin myself where each time I push to repo or create/close an issue, it triggers a +1 on a habit (which results in Gold and XP) so indirectly, perhaps you might enjoy it?

I always forget about it then an pleasantly surprised to see a heap of gold + level ups later that day