Politics is the art of imposing your will unto others. Fear of judgment is your main problem, you will be judged regardless of what you say or don't. Opinions are inherently wrong, so are the people bearing them. If you want to be a leader, and the others to follow your beliefs, you need not to care what others think, or be afraid to make a mistake.
Life does not have a meaning if you have to do things to prove it to yourself that your life is meaningful. Evaluate your beliefs first and stand by them. You will be turning off people by not agreeing with them, it's okay. If you have good intelligence and open mind, with time your beliefs will evolve.