Make sure you are only saying yes to things you can definitely do today and do not try to spread yourself too thin.
You need to be more selective in what you take on today, or you will wear yourself out if you are not careful. You only have one pair of hands and you can only be in one place at a time, so be realistic and only say yes if you are sure you can do something. You need to get tougher with yourself and start saying no more. If you do not you will burn out and you are no use to anyone like that.