Even if it’s a mundane task like walking dogs, you could start the next (or only) full-service dog walking and grooming service in your town, where dog owners rave over your business and always refer you to others. You can hire other dog walkers as you grow, and turn your side hustle into a sustainable enterprise. You just have to do the work, and do it well.
Protect yourself: In the end, you also need to protect yourself and your wealth, from yourself (doing something stupid with your savings) and others. Insurance, legal corporations, rainy day savings funds, tax shields and so on, there are many ways how you can protect yourself and your wealth. If you’re asking from what? From accidents, the government, market melts, sneaky salesmen and even from yourself is the answer.