You're twenty-six and asking if you're too old to change careers?? Um....no.
I was thirty-six when I went back to college. I'm 41 and in grad school as well as teaching now. I worked in a warehouse, too, a long time ago. And in between, I worked a lot of different jobs in a lot of different fields.
A suggestion? Get clean first. Make that a priority. Then figure out what you want to do -- and at 26, you have plenty of time to decide.
Peace & Love,
Sugah