I heard Erwin McManus ask this question and it has changed the way that I think. Relevant is what the world expects. It means you're right in the mix. Right in the sweet spot.
There is only one problem. If you're right in the mix, you are not leading the way. You're just fitting in.
Don't aim to be relevant in your own life. Be a leader in your home, in your relationships, in your work place. Be unique. Be exactly what you were intricately designed to be, not what the world has made you.