Right now, I'm sitting down, alone and listening instrumental music,
Sitting and doing nothing does not mean that you are lazy, but it might be that you are thinking and analyzing "who and what you are"; thinking what might happen in the future; remembering your sadness and happiness; making your mind and body to relax; thinking about your peers, siblings, parents, and significant others; realizing anything to make things better; and as usual-expressing your emotion. However, too much relaxing or doing nothing in a long period of time is a laziness. It can also lead to mental problem especially when you think too much, you are so much emotional about the things on your mind and you become depressed!
Some people can express their emotions only when they are alone. Like me, sometimes I cry to express my hurt and sad feelings when I'm alone. Sometime I talk too much to myself and laugh when I think there's something funny in my mind.