Have you conveyed this consern to your psychiatrist . Modern drug therapy is quite effective if given judiciously.  You will definitely gain your prev personality but first have an evaluation from a good psychiatrist about why your medication is not working!

Hello, yes it is definitely possible and rather the goal of treatment to get you back to your pre illness self. In case medication have not helped you a comprehensive assessment is required to understand basis of your incomplete recovery. The causes could be multiple ranging from biological factors like thyroid, medication, hormonal causes, seizure disorder etc. Psychological causes like stress, dysfunctional relationship etc. Social like family related, professional related etc. After a thorough review, options of helping you regain your previous emotional and intellectual self can be planned. One definite solution is addition of a psychological intervention to your medication. Change of medication, treating related conditions can be discussed in person with your psychiatrist. Do not delay help seeking to help you get better and the best of you.. Hope this helps you..

Of course.  Meet a psychologist in your city and find the root cause for the depression earlier.  Then ,  definitely he Counsellor would help you how to overcome that and face life more confidently and successfully