I know I say too many times but you are a grown up now. And as a freelancer and grown up freelancer, everything you do is your own responsibility. It scares a lot of people. What also scares a lot of people is not being loved. I know this again, sounds very philosophical, but this is true. We all want to be loved.
Because of this, we are saying yes to everyone. Someone is facing us with a problem or a single task. We say yes, I can do it. Yes, I can fit into my schedule. No problem. Yeah, I will there.
I will help you. Just call me and I'm there. It's your responsibility as a grown up to create a safe environment for yourself and an environment where you can safely say no. A lot of freelancers are afraid to say no, because they think they will lose a client so they will lose money and they won't survive. If you have a plan. And you are not aiming for survival.
If you are standing on more legs, and if you create space for yourself, that is not true. You don't have to be afraid to say no to a client. If you have enough work already, just say no. If it is not your territory and it would be not challenging but impossible for you or do you are not interested in it, just say no. If your client is pulling your prices down very, very much. Just Say No.
You might lose this tiny job. Maybe this client won't be happy. But on the long run, it will pay out you will get better paying clients and better jobs later on. And you will have the time for yourself and you will have a space to develop yourself and take on jobs you really really like. So just say no and let the project go.