Anyone want to make any recommendations for good diets? I need to trim off some extras

. I know this probably isn't the best time of the year to be doing so, but I can be very committed when I'm serious.
I'm not into diets where it requires me to only eat 500 calories a day or crunch on celery for 3 months. Those are unreasonable and not to mention very unhealthy.
Let me know. I appreciate your help.