What do you consider to be your weaknesses?

This question particularly gets challenging for me. How is one suppose to project their weaknesses without seeming to be a misfit for a job? Where’s the hold off in saying too much?

Tell me about a challenge or conflict you’ve faced at work, and how you dealt with it.

It is fairly easy to bring up situations and moments where I stepped in and I took charge. From any of my past and present workplace, their was always a moment that I was presented with much more responsibilities to test how much I can handle.