I suppose each of the habits that I tried to build generally improved my life, but I'm not sure that I've setup clear milestones to work towards. That's something that has worked well in personal projects, so I'll give it a shot for habits as well! Thank you for the feedback!
It's hard to answer about overarching purpose. The habits I highlighted each help towards some purpose (organizing my life, learning languages), but only form some portion of that goal.
1. A milestone that marks when you have done "enough" and can quit without feeling like you failed.
2. A metric that reinforces the idea that "I need to keep doing this to avoid bad things or to get good things. When I stop, things I don't desire happen instead."
Without one of those, you will tend to have some internal, subconscious thing go either "Yup, I've gotten what I needed and can't be bothered with this anymore." or "This is pointless drivel and doing nothing and wasting my time, and I can't be bothered with this anymore."
It's hard to answer about overarching purpose. The habits I highlighted each help towards some purpose (organizing my life, learning languages), but only form some portion of that goal.