I'm very minimalistic. So the question becomes a bit 'warped' to me. You fill one hole, and another can be emptied.

If you're talking about literally taking your life. Then i'd say...

My mind and all it's unusual and usual workings
Nature (animals, plants etc.) to keep it 'ticking'..

If not so literally

Writing tool and paper (unlimited)
Society (maybe....i dunno)

Very vague. It's hard to say...but i'll find 'it' one day. One needs to dig, see..