Level other DoH classes to 15. Each one gives you a cross-class skill when you hit 15 that you can use to help get you there. At lower levels, you can't quite guarantee HQ, but you can get a heck of a lot closer.

What I've generally been doing is Inner Quiet, Basic Touch x3, Master's Mend, Basic Touch as many times as I can and still leave enough durability to finish, Rumination to get back CP from all those Basic Touches, Steady Hand, Basic Synthesis. (That's for a 40 durability recipe.)

Here's a nice guide to a more complicated routine: http://www.reddit.com/r/ffxiv/commen..._let_crafters/