I find myself doing a running 'in my head' commentary while I'm driving. Every time I see a nice sized outbuilding on an abandoned lot I'm think, ooh I could grow some nice ones in there, or I wonder if it has a lot of light leaks, or man with some insulation and a bigger breaker box I could run that year round . . .
Then I go home to my tiny two plant stealth cabinet and remind myself that I only smoke a bowl 2-3 nights a week and that I end up giving most of what I grow away anyway. Its human nature to want more than we have.