For your doc to tell you that Lexapro is not hard to go off is very ignorant on his part. Lexapro can have severe withdrawals if not titrated down very slowly. Some have been known to have permanent damage by quitting suddenly. IT is also known to cause huge weight gain. Is this your regular doctor or a psychiatrist.
http://www.rxlist.com/cgi/generic/lexapro_ad.htm
There is plenty more out there if you just look around, do not go on the Lexapro official site because often it won't tell you what you really need to know.
Celexa is a lot milder. I took that for over 2 years and had no problem going off but most ADs should be titrated down. Not just quit. Everybody is different. Lexapro is quite heavy for someone who suffers from situational depression.
Ask to see a psychiatrist. I am so sick of hearing of regular GPs handing out the psych drugs like candy and misinforming their patients.