Finally starting ivf.

My husband and i have been trying for 9 year yo get pregnant with no luck. We finally saved enough to do 3 rounds of ivf. Monday i go in for baseline testing and im freaking out. Im so terrified that this wont work. That we have spent all this money and it will be for nothing. I havent told my family that we are doing ivf because althoughthey mean well they have always put some much pressure for us to have a baby.. so i dont really have anyone to lean on. Im hoping for advice. Or just someone to talk to that is going through or have gone through this process. What should i expect? Is there anything i should be doing to help me better the odds?