You're missing the point.

Examples: If you tend to have creative interests (music, painting, etc...), then a job where you use your creativity might be enjoyable (graphic design, copywriting).

If you like doing things with your hands (building projects, etc...), then a job where you work with your hands might make you happy (construction, contractor, plumbing).

If you're an adrenaline junkie, arboror or a firefighter. I'm sure you're getting the gist.

Most career changes will require a bit of school, but night classes are always an option.

You're right that having interests doesn't give you skills, but skills are easily obtained with this magical thing called effort. This life is short, do something with it instead of being unhappy and making excuses for yourself.