i think it is completely normal man... especially for your age... i go through very very very similar moods... i become really detactched at points... i don't know how i snap out of it though... i think by focusing on my blessings, and opportunities... i dunno

BUT i do know one thing... my mind never stops or slows... so what are you thinking about constantly what deep thoughts are you processing, to cause you to detatch from the outside? If it is a sense of purpose, or direction, i understand... but ya just gotta realize, the quality of your life is based around your ability to keep yourself happy... do you think you make yourself happy?