Sometimes I don't understand something. About capabilities. To do something or not? Can or not?

For example, distance. I can see I can hear but I cannot touch? When will we transfer our touches? Will it be the same? Or we want the real one or “the same”?
Anytime you want something, the world brings you obstacles. Anytime. If something goes well, I am sure that it's not the thing you completely want. When I try to think about it, I say its the way I can improve myself. But What if obstacles exceed the limit? shut down? Can they be too much to provide improvement?
Can we know our limits? Our own world? Our line?
Also, everything is about decisions. Maybe we can do it but will we do? It's up to us. How does the world decide these things?
Does it decide?
We even don't know this information too. And now, I am just writing. Just this. I can touch you with my fingertips on the keyboard. But it is not the real touch.