You have to start somewhere.

And you saved a bundle by not having a plumber come and do it for you.
I've done a ton of large and small projects over the past forty years. Early on, it was DIY or do without. Here's a short list of a few things I've done:
~changed out numerous faucets and drains.
~wired my double garage from scratch and passed inspection on the first try.
~built numerous decks, porches, and steps.
~gutted a bathroom to the studs and did a complete remodel, essentially by myself, which included all new plumbing, wiring, Sheetrock, subfloor, tile work, and lots of other tasks.
~repaired numerous appliances.
~painted lots of stuff.
~repurposed too much stuff to mention.
~installed wall shelf in camper, making the entire camper more efficient to use.
~did many, many modifications to camper that made it all more workable. (I consider our camper a part of our home.)
~built AARs (Add A Rooms) for two previous campers, and have a cabana to alter for the current one come spring.
~refurbished many items to prevent having to replace them or buy other, more expensive items.
~installed windows and doors.
~built a much-needed custom rack for cast iron cookware and other cookware.
~laid various types of flooring.
~cut countertop and installed sink for our kitchen remodel.
~installed cabinets for that job and others.
~built and installed floor to ceiling storage rack in my sewing room and then created a storage system using plastic pails for assorted sewing notions.
~built an 8x5 shelving unit from a couple of old waterbed frames to house my cookbook collection and provide shoe storage.
~customized a stock wall cabinet to use for storage over the toilet.
~opened up the wall above a closet which was just wasted space and added shelving to increase storage. Still need to add a door and finish trim work.
~planned and built framing and skirting for our 64x28 house.
~changed or repaired ceiling lights and fans.
~installed dog doors in walls and doors.
~built a cat door that goes in the patio door leading to our screen porch, using a leftover framework from a waterbed drawer base.
~installed all the screening in the screen porch.
~installed curtain rods of different types in various places.
~removed and adjusted outside door so mice could no longer get in.
~installed new electrical circuits for this and that, such as a dedicated circuit for the microwave.
~installed every water heater we've ever had to replace in the past 40 years except the last one.
I can't look around any room in our place where I haven't done some kind of repair, improvement, organization system, or other work.
I've done all this stuff and lots more, but I'm getting older now and paying to have people do some of this stuff has become very appealing. I have a bathroom vanity sitting here waiting for installation, and I plan to hire someone. I have nothing to prove and plenty else to do, so I'll be happy to pay a plumber.
I actually like doing stuff like this and have always loved the challenge, and that's why I've done it for so many years, even though we can afford to hire people now.