Trust

Trust is a funny thing, and it needs to be in balance in your life in order for any of it to work really. If you are too trusting, you get taken advantage of and stepped all over and just can't see the evil in people, however if you trust no one you risk leading a very empty and miserable life.
the problem comes in when people whom you have trusted betray you and you become overly cynical of nearly everyone else around you. you doubt yourself and your character judgement of people and wonder how much the next person is going to screw you over. so you keep everyone at a distance for fear of being hurt but it is a lonely existence. you try to avoid the pain of betrayal but enter a void of loneliness.
when you don't trust yourself who else can you trust?
yes God, but sometimes the circumstances in our lives cause us to question even his wisdom. which is awesome to question the one who created you and all things as if HE does not know what He is doing, and us mere humans can run our lives better.

as it says in psalm 118:8
Far better to take refuge in God than trust in people

however in our everyday lives there needs to be some amount of trust put in those around us.
why do we give our trust to those unworthy of it time and again but have a hard time trusting those whom we have no real reason to distrust.
the problem comes in when getting to know someone, that relationship, of whatever sort can only progress so far on a surface level, if you do not trust a person enough to open up then the relationship fades or stays as merely acquaintances or superficial relationships.
if you open up too quickly and trust too much it may be too much for someone to handle and they take off wounding you yet again causing you to retreat further into your shell.
but what if you build up the trust slowly? it can go either way, some people just wait until they've earned your trust enough to get in on whatever level they want and then they strike, and yet i believe that the majority of people are not like that it's just that those who are do so much damage.
we just have to realize that people are people, imperfect by nature and even those closest to us can hurt us either intentionally or unintentionally, and while trust is something to be earned it still must be given the opportunity to be earned and grown.