Establishing a daily routine really helped me out. The power of will isn’t reliable, but habits are strong - you are what you’ve used to do on daily basis. Ten push-ups are better than no push-ups at all, but in a while, it gonna be twenty and thirty. When I started to use time/task trackers (super-productivity in my case, since its FOSS and has features for ADHD), it gave the feeling of continuous progress: do a small thing, check the box, move to the next one, and you are doing well!

Yes. Space exploration and further colonization is the only possibility for humankind to survive after politicians and military will nuke the Earth to stone age, so we need to preserve our species.