I used to be someone who said “yes” to everything. I became overwhelmed, stressed, frustrated, irritable, anxious, tired, etc. And the worst thing was that I did not feel like I was doing my best at anything because I had so little time for all my commitments and absolutely no time for myself. I did not want to disappoint people but my lack of boundaries led to me being disappointed in myself. Only one person could change the situation and that was me.
Your goal is not to complete as much work as possible. The goal should be to do the right work at the right time with the best quality possible. Being busy is not the same as being productive and it certainly does not mean you are important. Do yourself a favor and focus on being amazing at a few things and you will see how quickly your life can turn around.