You will be as good as you can, as often as you can.
I was going to say “you’re ready to do your best for someone, every day” but let’s be realistic — we are all human and we all have good days and bad days. We can only give so much and sometimes need to be supported ourselves.
What’s important here is that you’re ready to put solid, consistent effort into your partner, your relationship, and even developing yourself. If you’re not ready to do that, then it’s best to not commit to someone who would do it for you (yet).
You’ll put someone else’s interests ahead of your own.
There is compromise and sacrifice in every relationship. This could mean anything from watching a type of movie you don’t like, to moving to a new city or state for the one you love. The bottom line is, in a happy, healthy relationship — your partner’s happiness is just as important as your own.
Your willingness to put them first at times is a signal of your readiness to commit.