I work at a company where there are about a gazillion employees. I can't say that I know them all by name, but I know my fair share of them. I think that almost all of them know me. I'd say that's the reason I've been able to go wherever it is I've made it to in this world. It's all based on one simple principle: I believe every single person deserves to be acknowledged, however small or simple the greeting.
I have two questions
1. I would like to know the meaning of "it(1) and it(2)" in the next sentence.
I'd say that's the reason I've been able to go wherever it(1) is I've made it(2) to in this world.
2. I would like to know the meaning of the next sentence.
I've been able to go wherever it is I've made it to in this world.