1. I realised the hard way that you can't focus on too many things at the same time.
2. Ruthlessly cutting down pursuits to one thing helps drive results.
3. Focus on areas you have circle of competence in.
4. I struggle with abstract ideas, and jump to projects without thinking the details, scoping abstract ideas and writing down concrete POA helps in completing things.
5. Working hard on staying loyal to my resolutions. I took a resolution last month to write a book on rust for beginners. I constantly hold this thought every day in my head. It helps a lot in making progress and saying no to distractions.