I am 23 years old, female. and since i was 18 i have had these long deep lines under eyes, above cheek bone. how can i get rid of them completely?

Tear trough: Prominent nasojugal grooves, commonly known as "tear troughs" are lines which can form at the lid/cheek junction in the face. They usually develop at a later age, but certain families can certainly have that as a characteristic. Injectable fillers such as juvederm or Restylane (dermal fillers) in the hands of an experienced plastic surgeon or dermatologist are an excellent treatment option.

Tear-trough?: These may be "tear-troughs". They respond nicely to filler injections with belotero, or other fillers. See you local plastic surgeon for a consultation.

Eye lids: without a photograph it is difficult to assess your problem. It is possible that this is something that can be treated with fillers. Have your eyes evaluates by a board certified surgeon who treats eyelids.