My eye is so much thinner than the other(tissue around the eye). The eyelid space is smaller makes eye look elongated than other

Thank you for the question. It is not clear what you are experiencing without a photo or in-person examination. Typically, any eyelid issue that corrects itself with sleep is not a surgical candidate. If surgery is performed, then when you get enough sleep you will look over-corrected. You need a consultation with an Oculoplastic Surgeon. Good luck.

You may have a subtle form of ptosis.  It could be something else.  Without a photo, it is hard to guess what you have going on.  Obviously if you are motivated, a consultation would answer your concerns.

There is that saying about a picture being worth a thousand words. That is truly applicable here. Take a set of pictures documenting the issue and go see your doctor. Your primary care physician should be able to direct you to an appropriate practitioner. There are some medical problems that can cause some of these issues.