In reply to chris_r:
I get what you mean, knowing you've got your fancy new micro cams or fancy tiny offsets can definitely give you a confidence boost but I think that's more down to having a bigger rack and therefore more gear options.
The biggest confidence booster I found is to take a fall on gear, in the same way that getting used to falling sport climbing gives you a big boost to push yourself the same applies to trad. My first fall was onto a shockingly under-cammed micro cam with only 2 lobes touching the rock and the psychological boost I got from seeing a worst case scenario piece of gear catch me was immense.
To answer your question though:
> Is it a bad idea to use gear to "buy" confidence? Should I be training my mind to be confident in its own right?
I don't think so, if having more gear makes you more willing to commit to a route then fair play but if you're not willing to climbing easy stuff without micro nuts/micro cams where you can place gear every 2 feet as you move onto harder grades where gear becomes sparse you might find you've shot yourself in the foot a bit and missed out on that mental development of getting used to exposure.