Maybe you should start by adding the task "finding an important project" to your to do list. Think about everything that means something to you and how you could spend your time with it in a meaningful manner.
Make it work for you! If you don’t have much to do that day, think about some deep cleaning tasks in your house, include a hobby you want to keep up with, read a chapter out of a book you’ve been meaning to read. Put self-care on your list! Adapt it to your schedule and needs.