i think the solution is to think more about the harm of giving things away.

I used to be an enabler myself, and what I nowadays do to prevent it is the following check:

• Does my action reward or is it just generosity?
  • If reward, is it deserved?
    • If yes, do it.
    • If no, don't do it - save it for a better cause.
  • If generosity, does it make an impact?
    • if no, don't do it - save it for a better cause.
    • If yes, did I do this to the same person recently?
      • If yes, don't do it - it will make people complacent
      • If no, do it.