Glad to hear that you are making a move in the right direction.
The only other med that I tried was cymbalta - if your doctor recommends it, do yourself a favor and say NO. It had such a negative effect on me, and I have heard of others having the same negative side effects. For me, lexapro is working so well, giving me great motivation and focus. If you find that it makes you sleepy, then taking it at night counters that problem.
Seeing that you do not drink you can mention this to your doctor, as there are a number of meds that are taken at night only with the added side effect of helping you to sleep well.
Anyway, let us me know how it goes and what the doctor decides to put you on.