If your brows are below your superior orbital rim, you can look tired, angry, or pensive, and your upper eyelids can appear "heavy" or droopy. Most patients, regardless of age, who have ptotic brows (droopy brows) actually come in asking for upper eyelid surgery, when in fact they have little or no "extra" upper eyelid skin but rather droopy brows. Some have both, and need upper eyelid surgery too, but that is unlikely at your age!
If this is your anatomy, and examination by any well-trained, experienced, board-certified plastic surgeon or facial plastic surgeon can easily help you with this, then you are a fine candidate for browlift surgery.
Brow lift or forehead lift can be done open, through a bicoronal incision (if nicely done, the scar is imperceptible and numbness minimal--no head shave) or a hairline incision if you would like your anterior hairline lowered (more common in males, and also requires a precisely-done tricophytic closure). It can also be done endoscopically, which utilizes several smaller incisions near the front of the scalp for access to the brow area. Each approach has its pros and cons (and each has its proponents among doctors), but both methods give great results when performed by experienced, board-certified surgeons.
Go for it, and best wishes! (Why do we all keep mentioning board-certification?:)