"Thought" generally refers to any intellectual or mental activity. It can refer either to the act of thinking or the resulting ideas or arrangements of ideas.
Everyone can be a leader... a really good one as well. It's important to know how to communicate with others, to be responsible and to reach company's goals. I learned so many useful things at Toronto leadership training camp, which was last year in August. Joining a camp like this can definitely help to make some new friends and to find out how to lead a team.