LOL, sounds like you need to diversify or something to keep yourself buzzing about your business. Get a chippy van or start doing different food/meals? Open a new one, open a restaurant, sell to businesses, rebrand or something. Sounds like you're already onto something which is cool, most people that are sick of their work tend to let it die a death.
I'd give my business away if I won £1m! I'm sick of it after running it 13 years, and being in the trade for over 20! lol
I'm in the process of doing something about it though, but a lump sum will speed things up!