Here's an idea since you like coffe so much, how about creating a special thermos relating to an interest or niche. Back when I had an office job working political phone sales lots of people had they're own thermos, imagine you had some design relating to that. I saw this coffee cup that had a middle finger on the bottom so you could talk to someone, drink the coffee and you flip them off, something funny or silly I'm sure could sell. Even a coffee cup with trumps face on it saying make America great again can spark huge controversy and net some salesThe Coffee Shop side is a skill i already master and the clothing side is an idea i had that i always wanted to develop, i don't want to live with regrets so i'm doing this. And i'm not gonna stick with a single idea if both can be done (even if everyone is telling the opposite).
But keep in mind that i'm also on the forum to learn where people have been fortunate to create something fastlane, the coffee shop is a thing i told myself that i could do, but the rentability is weak, the scalability is weak (a lot of competitors very talented) and the entry is very low.
I've only started the clothing business because it's way cheaper to start, but i'm still looking for an other industry where i can do something with a higher entry. (didn't find it yet)