Speaking your own truth is always a good idea in my experience.
It gives your surroudings an accurate and honest impression of who you truly are and what you stand for. Being honest and sharing your truths and wisdom is the fastest way to grow, and sure it might put a knife in your current relationships but if those were build on you being dishonest or not daring to speak your truth, truly that is good riddance.
I have found that the more I speak my truth the more people I meet that fit me truly. I attract the kind of people I really enjoy being around. And this seems to go both ways. In my experience these are both the most relevant and the most enjoyable relationships to me. The ones I learn from and in which others learn from me, where there is a kind of win-win sense where both parties grow from interacting.
Know yourself, speak your truth and follow your curiosity, interests and passions with integrity and without expactations. :D