We have to take into account the varying skills of the members here, some can use their hands for operations that call for dexterity because of training and experience and thus have confidence in their abilities. Others are able to do involved projects that call for sheer brainpower but could not confidently change a tap washer.
Most of us fall between these two extremes and are better of not trying something that is a little too far out of our comfort zone. Doing more projects at the limits of one’s skill set gets those boundaries extended and with it comes an increase in one’s confidence, mistakes will happen so you either suck it up and pay for the mistakes and continue to push those boundaries or you quit.

Just make sure you can afford the possible mistakes before you start though.