[MichaelGG]

If you're really so far overweight that you have to "work the rest of your life" to be presentable, then seek a doctor's advice. They can (legally!) give you powerful medications (in the US, methamphetamine) which can drop weight very quickly.

Not that weight is the only health metric, but it seems to be one you are complaining of. Nor is medicating perhaps the best way to lose weight, but it's powerful and might give you motivation to keep at it once you get some easy losses.