As an owner, you do have the right to rely on the A&P/IA/Repair Station to properly perform their work. That being said, flying in inherently dangerous, and if you want to control your risks, you'd do well as a pilot (not just an owner) to educate yourself on a variety of elements of aircraft maintenance. For example, the Cessna Pilots Association offers both in-person and online Systems and Procedures classes for several models. I took that class for the 182 shortly after I bought our plane. It was absolutely worth the time and money. Since then, I have taken many opportunities to continue to learn, and after 18 years of ownership, I think I've become pretty knowledgeable about 182s, particularly to know when "something doesn't look right or feel right" and it's time call the A&P.