One of the biggest reasons I find myself in procrastination with hard problems is when I don’t give myself ample time to work on them.
Say you wake up, and you have a meeting at 11, and another meeting at 3. It may seem like you have a lot of time for the rest of the day to spend on a hard problem, but your brain knows better. It’s too afraid to start because it knows you’ll be interrupted.
Avoid these types of schedules if you can; perhaps bundle all calls / meetings on one day, or towards the night.