Keep a Bullet Journal or similar. (I actually use tasks in Outlook this way.)
Break big projects into chunks, get chunks done, even small ones. Checking off boxes gives a good sense of accomplishment.
Schedule breaks, like with a Pomodoro timer. 20 minutes of work, take a 5 minute break. Repeat. After a bunch of work cycles, take a longer break.
Similarly, have they offered something worthy of my time and consideration?
Yes, consider engaging.
No? Next.