While I 99% agree with the thesis of this post, I feel like another part to why I was late with a ton of projects earlier in my career was due to me getting prolonged depressive episodes, where I didn't want to leave my bed, let alone work on some software I really don't care about. For me, I was later diagnosed with Bipolar II, but it makes me wonder how many people just try and "walk it off" with these things, and as a result their work suffers.