A friend recently complained, "They keep telling me how to do my job. It's not my first day; I know how to do the work. I need to know what they need done and why. I can figure out how to do it myself."
A good point, yes? The next time you ask someone for help or attempt to offer some leadership, try giving the "what" and "why" and refrain from offering "how"... unless you're asked :-)