First day back, feel like resigning

Anybody else in the same boat? Been feeling this way for a while but having a good break has amplified this.

  1. I feel like I’m not any good at my job. (My own thoughts, end of year review with management went quite well)

  2. I feel like what I get paid is not worth the responsibility/stress that comes with the role.

  3. I want to spend more time and have more energy for my kids (3yo, 2yo)

I want to resign but don’t have a new job to go so I guess I’m looking for advice from anyone who has resigned unexpectedly then made it work either going out on their own or doing something they actually enjoy