"What do you think about your personal relation to numbers and how they tie in with our own lifes?"

The characteristics of the numbers have the ability to express aspects of our reality through directly working with them. This, based on my research, is the inherent power behind them.

Aside from the above - they, like letters, are merely symbols who's purpose is intended by the user. The level at which this effects others depends on their level of knowledge on the subject. You're right, numbers are not positive or negative - nor are letters. Both however may be used to trick, mock, manipulate and confuse any ignorant on either subject and many other factors. Of course numbers and letters may be used for positive as well. These symbols do not necessarily exert power themselves - they are tools.

"I feel so connected to the 9/11 symbolism..."

As far as your personal "attraction" to certain numbers, that is for you to explore and come to your own conclusions. Maybe there is a lesson within you are supposed to learn, maybe it will lead you elsewhere.

Hope this helps!