I have recently realized that i am a little ...

My grandaughter has the same problem and is much too open to new people. As much as it is a good thing to be a warm and open person, it is also necessary to be wary of the people who come into your life. Don't give too much of yourself to someone until you really know that they deserve that much of you. It's very easy for people to take others for granted and if you give them the open door, it will happen. Be the kind and warm person that you are, but know your limits as far as the beginning of a relationship goes. Use your judgements as to when to let people in more or not.

If you know what it is that you don't like about yourself, then do your best to start trying to change it.  Try to be just laid back with people.  Forget about any expectations... don't have any and just let people get as close to you as they want.  Just be nice and talk to people.  Let them make the moves to get close and then you can decide if you, too, want to get closer to them. 

To me it sounds like a disastrous combination of 2 things.. Co dependency and high expectations. You feel you need people in your life almost in a desperate way (Co dependency) so you immediately jump in with both feet, but then with your high expectations of this new relationship you expect them to be a certain way or you feel betrayed, let down! After all, you put in all this direct effort to get fimilure with them, and then look how they act! You have to slow down. Deside the type of friends you want and slowly find out if they're worth your while. That way you won't set yourself, or them up for a crushing disappointment. I've rushed in with people too.. and every time I've been disappointed. It takes a while to really get to know people. Let them earn your trust before you let your guard down. There's nothing wrong with that.

Great advice by the others! What is wrong with the thumbs up deal? It hasn't been working at all for me lately!

It could mean that you are too eager to please people, to make friends at all costs, and to have others like you. You don't have to love the world and the world doesn't have to love you. All you have to do is be respectful of others without necessarily getting close. A little distance goes a long way. Go slowly at first. Besides, longterm friendships are cultivated, not just made overnight. If you stop "acting," your true self will come out naturally and people will know your personality from the very start, rather than get disappointed later on.

i like ashas answer it does truly take a while to get to truly know someone the same problem is in my life though i have found that relaxing letting other people warm up to you helps alot dont be afraid of yourself you probably like to lead. outspoken individulas/leaders tend to have this trait but remember long term friends are always better then short term. have a good one

And?  So you like people, so bfd.

Everybody is psychologically different to what is considered normal, and the best way to adjust ones psychology is thru education, which is what happens when one goes to a psychologist. Psychologists cost a lot of money unless one has insurance. Another way is to become a psychologist yourself. The website below offers online degree courses. I don't know what it costs. 

www.open.edu.au