Believe in yourself. You can walk your own path. Don't be afraid to shine.
Some problems seem insurmountable. An expert would say that there are only a few possible ways to solve it, but someone with fresh eyes would believe that there are endless possibilities to be discovered. Try looking at the problem with fresh eyes, as if it's the first time you've ever seen it, and dream big.
Don't get emotional, that's when battles turn nasty and things get ugly. Take the high ground by using facts, not feelings.