Issues with my weight

I have an issue within myself.  My weight has been a problem and I need help.  Give me the real desire and motivation that I need to lose weight.  It seems to me that I have all but lost my desire to lose weight.  For the time being, I wish to lose 20 lbs., but I have grown concerned.  I want to lose weight, but I am not sure how to go about it or where to begin.  I have a problem with binging and health issues.  I am not a healthy person and I feel like sometimes I am barely healthy.  I have grown tired of the wheezing and the lack of mobility.  I have given up and I don't wish to be defeated no longer.  God, help me.