Keep making the world better as long as it isn't destructive for yourself.
You're really good at making the world better (or at least the part of the world that is your city). But make sure that you are still an important part of it - if you burn out then your part of making the world better may be put in danger.
If there is something that requires help and you are perfect for it but have so many things on your plate right now, there are going to be several options which won't be self-destructive.
Give it a pass. There'll be someone else who's perfect for it, or it may fail. This is a risk worth taking.
Provide a small amount of help which you are completely sure you can manage. This may even involve making the connection between the project and someone you know who will be perfect for it. They may have to face the same choices as you, but each person in the chain may make different choices. Maybe you just take care of ordering the pizza on the night, but make sure that your boundaries are clear and you don't take on more than you can.
Reduce your other commitments so that you can take on this thing safely. Maybe it'll involve taking a day off work afterwards in a really mild situation, or finding someone else to take care of your part in another project.
Remember that you can face these choices at any stage with any project. Giving it a pass may not be a socially acceptable solution, but if you vocalise your problems you'll probably be surprised by how supportive people will be. No one likes watching their friend or colleague burn away in front of their eyes.
If you do wake up and realise that you've gotten too close to burning out, take action! Book in a day where you can do something that is relaxing and ensure that you have no responsibilities. Mute your phone, set up an auto-answer on your email and maybe see if you can get someone to cook you food so you don't even have to worry about that. If you find baking relaxing you can repay them with cookies or delicious brownies.















