I want to loose weight, don't care how anymore...?

I have been trying to loose weight, I have changed my diet to a healthy diet years ago(no fast food, no soda, no doughnuts, high grain bread if i do eat some, very little or no sugar, tree fruits a day, only red meat three times a week) i exercise, but my body seems have always been in a starvation mode my whole life, i cant seem to loose weight, I am running out of options, I am 6' 3" 290lbs, i am sick and tired of it, thinking of doing nothing but chewing appetite suppressants and drinking water and screw it i rather die than be fat for another year of my life. people tell me that starving is unhealthy, well yeah, but so is being 90lbs over weight.