It could be a mistake to cling tenaciously to beliefs to which you’ve given logical thought. They could be imperfect and flawed. Nobody knows everything. However, we might be in a discussion or at a presentation in which we learn a new piece of information. Perhaps that piece of information brings light to your belief. Should you alter your belief after so many years? Of course you should.
Don’t be one of those people that would rather win than be right.