A life coach is there to speak with clients about any issues the clients have, help clients set motivating goals for themselves, navigate through important personal and professional decisions, and much more. Though most life coaches help coach clients in various aspects in their lives, it is possible to specialize your coaching to an area about which you are really passionate. A few examples of specialized life coaches include health coaches, special needs life coaches, relationship coaches, career coaches, and executive coaches.
Working a side hustle is a great way to generate extra income, regardless of why you need it. If you're behind on savings (whether of the emergency or retirement variety), and your living expenses currently eat up your entire paycheck, then taking on a second gig could be the least painful means of catching up to where you need to be. (Your other choice, for the record, is to seriously cut back on your existing expenses, which could result in some serious lifestyle upheaval.)
I surprisingly get a lot of people asking to detail their car. I never intend to make a business of it, but I love doing it to my cars and people ask me to do it to theirs. All it takes is a cheap orbital buffer (mines a used craftsman) and a shop vac. I normally get easily $100 for a basic wash/wax/vac, or $200 to remove scratches and polish then wax the car.