Topher Payne's fix of "The Giving Tree" is a perfect example and it will still give you a good cry at the end.
Setting healthy boundaries
is a very important part of giving. It assures you'll always have
something left to give.
And if setting a healthy boundary gives you guilt ask yourself, "Does this guilt align with my values, or is it from someone else's values? Do I want to continue to try to meet those other values, or just focus on living up to my own?"