For letting go of my tool/weapon of choice I 'hide' it from myself. I place it somewhere I wouldn't usually think to look. I've heard of people placing happy and encouraging messages where they used to keep their tools, or where they would expect to look for it.
For me it has helped to hand it over to a loved-one that knows what I'm going through and is understanding. I tell them that I want to be done, and I ask them to 'keep it safe' for me, which we have the understanding that it's to throw it away.
Anything you can pick up doing instead of picking up the tool has helped me. I have passions for writing and art, so drawing to express what I want to do has been helpful. Sometimes putting on my 'feel-good' music and choosing to be goofy and dance until I laugh or my body feels better is something I do too.
Maybe check out TheWork.com and try some of the exercises might help. I love the Turnarounds for situations like this..
About The Work :: The Work of Byron Katie