Learning how to lift weights changed my life.Kasia KovacsKasia Kovacs was unsure hiring a personal trainer would be worth the money.Nearly a decade later, she's still reaping the benefits of splurging $180 on training.She said investing in her health helped her become a more confident, happier version of herself.When I hired a personal trainer in 2017, I didn't expect that decision to change my life.It seemed like a hefty financial commitment at…