Everybody wants to be understood first before suggestions are made.
For you to understand why anybody holds a contrary opinion, you must listen to them with an open heart. You must try to understand, why they want to do things differently than how it’s usually done. Try to see things from their perspective, they may be at the beginning of something big.
And if you would try to understand them and win their confidence, you may be invited to be a part of it. Never despise the days of little beginning.
It is only after you have fully understood why someone is trying to approach something differently, that you could make suggestions that may help bring it to life.
So, always try to understand first.