Confused

Sometimes I wonder how we are able to function in this world when we are so full of feelings and thoughts all the time. Sometimes, I wish my brain would just shut off for a bit so i could have some down time, but it seems to always be thinking about something or someone or class or family or friends or work. It just seems to always be going. Anyway, lately (for the past several days), I have been feeling very down, not really depressed, just kind of down (blue if you will :) I am not really sure why. I am usually very good about being in touch with my feelings and making sure all is good with me. But, lately that hasnt been working quite right. I have been thinking to myself that I should be totally ecstatic this week becuase it is my birthday week. There is all kinds of great fun planned and I get to see all my good friends from here and out of town. But, for some reason, I am still feeling kind of blue. I have tried to figure it out and I think it is a combination of many things. I think the main reason I feel down is the fact that I often find myself trying to please others so much that i forget about myself and what makes me happy. I think that has been happening a lot in the past few weeks with family and friends. I think I have spent so much time thinking about how my actions will affect all my friends and not worrying as much about what I need. I am sure other people feel and act this way. Anyone out there know what I mean about always trying to please others so much that it totally messes with you? Another part is that I am leaving my job soon and I dont have one lined up come August. Since i am a born planner, this is very scary to me. Also, I am continuing school full time and starting an internship i am not sure i feel ready for. Also, I am moving into a two bedroom apartment with a good bud at the end of August. I think there is just so much going on during this month that things in my head are just going crazy. As much as I welcome all these changes, they are still scary. As we all know, change is always scary. well, any advice is much welcomed. :)