Dear
Welcome to HCM
We understand your concerns
I went through your details. I suggest you not to worry much. The symptoms you provide here are actually serious introspection. This does not mean that you are having some serious mental disorder. These symptoms can also be present when you are disappointed. Disappointment brings on sadness,
lethargy, inactivity, loss of sleep and total inactivity. I repeat, this could be disappointment.
Now, think, what was those occasions, after your marriage, you got disappointed? Write them down. Analyze them and do the need ful to overcome those disappointments.
If you have the ability to study more and if you wish to do it, then do it. If you want go for a career, do it. That way, you can free your creativity and lessen your negative thoughts.
If you require more of my help in this aspect, Please post a direct question to me in this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. I shall prescribe the needed
psychotherapy techniques.
Hope this answers your query. Available for further clarifications.
Good luck.