i am tired feeling so bad

[volume]

I am 19 .I have been diagnosticated with depression and anxiety and prescribed lexpro 20 mg.I do not feel it is working and i think i know the cause.Here it goes.....I always have the feeling that i have an emotional issue unsolved,i am not sure what  is this emotinal issue(i know it sounds weird) or maybe i do not want to reconise it because it is too painfu l.Whenever i try to be positive,do something i used to like,act normal, i feel that there is no use doing it,it feels hard,exausting, because it is not the same it used to be because i have this unresolved issue,it really *****.You might say go to a therapist and sort your issues but i have analysed and overanalysed what the unresolved issue could be ,what it really bugging me and i don't know what it is,i have even been to therapy but nothing.Everything i do feels different because of this unresolved issue,feels boring,useless.I feel frustrated because i can not solve this problem,it affects all aspects of my life,i do not want to eat,i have big anxiety when talking to people and i always feel guilty and frustrated because i think it is my fault i feel this way because i do not solve this emotional issue and i prefer to avoid it.I am so stressed ,i tried to figure out what could this issue might be and because i felt guilty about masturbating i thought this might be the issue so i told my parents i masturbate to relieve myself but it didn't work,i still feel guilty and feel i didn't  solve my emotional issue .This is why i think i am depressed and suffer from anxiety .I wish i could forget about this obssession with the unresolved emotional issue but whenever i try to go on with my life everything seems too hard too exausting and i imediately feel guilty and think it is my fault everything seems so exausting because i didn't not solve this issue.It annoys me and frustrates me everyday.
This is the biggest problem of my life..do you think chemical imbalance in the brain could make me think this way?

[zack32]

It seems to me that you are just bored with life and need a new focus. Try to not focus on your self so much. It is really good that you can be that open with your parents. Try talking to them to see if they have any suggestions on ways to help others. Sometimes when we do good for others we start to realize that our problems are not so big. There is more happiness in giving than there is in receiving. Are you a spiritual person? Sometimes all it takes is being aware that there is a grand purpose in life and there are better things to come. I found that reading the Bible daily gives me much comfort and joy in life. You would be surprised at how up to date the information is. You may find Matthew chapters 5-7 very interesting, especially if you can apply these things to your life.I would be happy to explain any scriptures you do not understand if you would like.
Well I hope that you find some peace of mind soon. And of course Dr. advice should always come first, because I am not a Dr., just a concerned citizen.

[Roger Gould, M.D.]

I understand what you are saying, and it is real..there is something deep inside you stirring, and often times it is hard to find...I do not think of it as a chemcial balance, and I am not your therapist so do not know exactly but I can tell you this...being 19 is a critically important and difficult transition period in the lifecycle..you are half child; half adult...and have the responsibiity for making your mind work well.  It is a deep worry, and may be the problem you are struggling with and can not put your finger on..it has to do with meaning in life, safety, and changes that are strange.  You might go to the library and look for my book...Transformations.......it is about the life cycle, and covers this period welll...and then go to therapy and talk about this issue...see what bubbles up then...r