Deliberate practice = practice that stretches your abilities and provides instant feedback
It has been estimated by interviewing masters of particular skills that to excel at a complex task takes 10,000 hours of practice. You need to have patience and keep working.
Use career capital to “buy” perks
Once you’ve developed your career capital and learned some rare and valuable skills, you will be more valuable to your employer.
Use this leverage to negotiate shorter hours, more freedom, etc.