+100 to "knowing what you're good at." Far too many people THINK they know, or they know what they've been trained to know, but this does not mean they really are all that good at it. Proficient, maybe even effective, but good is another thing... I probably didn't fully figure out what I was really good at until I was 50, and since then I've been trying to make up for lost time and correct past mistakes.
At 34 this gives me hope. Started at a new company in a more demanding role a couple of months ago, and it's been a challenge simultaneously learning the ropes of the new role, how to get things done at the company, how to use SAP, and getting acquainted with the specific type of equipment we are making. At least with the new job I get to travel to US every now and then, as my business unit's headquarters is located near Milwaukee, WI.