Recognize when you, honestly, don’t care that much
While you both, in theory, should have a 50/50 say in most matters, this isn’t in theory: this is your unique relationship. So, let’s say it’s time to decide where you spend your spring vacation. Your partner really, really wants to go to one place, and you feel perfectly fine about all options. So just go where your partner wants to go. If only one person feels strongly, either way, about a decision, then let them have their way that time. Why push for having things your way when you’d really be happy either way?