Continued depression with 20mg Lexapro and suggestions?

I ma actually happy with the lexapro at 20 mg since I dont seems to get real angry or upset but I am still getting depression and a little of anxeity. Since it is so hard me to find things that work I kinda dont want to mess with the Lexapro Since I do see a positive change (so does my wife LOl)and maybe just add something else. Any suggestion on what I should suggest to the doctor as an additive, like welbutrin or strattera or something...I dont know. Thanks for your help