Your truth is not your own truth
The way you see life is your truth, it is how you believe the world is or should be. But chances are that your "truth" is not your own. It is the accumulation of the truths of your parents, your peers, your society, your religion, etc. You probably haven't even consciously choosen your own truth but have grown to accept that it is the only truth. I have news for you. It is not and you CAN still choose your own truth.
Choosing your own truth
First, you have to become aware that what you believe is just one version of reality. Meaning, the world only exist in your mind. It is made up of your believes and convictions.
Now that you are aware of the above you should also know that if the world is just a creation of your mind, you are also able to change it....in your mind. How do you do this? First, become aware of the rules you have set for life and then start questioning them. For example, if you believe that people can't be trusted a belief might be: "people can't be trusted". You can debunk this easily by asking yourself "is it really true that nobody can't be trusted". Of course it is not true and if you can be really honest with yourself you will get a honest answer.
Now that you have debunked some of your beliefs you can replace them with beliefs that work for you. Remember, no one belief is true or false, it is a belief. You can choose whatever you want to believe but make sure that:
It is constructive, it serves you in a positive way
You strengthen it to the point that it becomes a belief
For example, if you want to become more trusting of others you might come up with a belief like "Most people can be trusted". By changing this belief you will now come across more people you can trust and you will be more trusting. Of course, you might get hurt but still in that case the belief holds up: most people (but not all).
You are in control of your world and your reality but you MUST become aware first that a lot of the rules you are following are not your own. Become aware and you can change them and change your life.
Go for it!