My younger son was ready to head back to his apartment after Christmas. I gave him a big hug and said an automatic, "Be good". He looked down at me, right into my eyes, and said, "You be good too, mom." It occurred to me that the two of us now have very different ideas of "good". He had gone to church with his sisters and dad while I slept in. I was heading off to work on the sabbath at the job that's been paying his rent. I have no temple recommend. No garments. I don't even know where my scriptures might be but I'm sure they have a very thick layer of dust on them. I know that's what he meant by good, but it's no longer what I mean. It doesn't matter what calling you hold in the church, how many meetings you go to, how many times you attend the temple or how well you know the scriptures. I know people who do all that and more but are NOT "good" by any definition.
I mean work hard. Keep a job and do your best at it. It doesn't matter how menial the job is, it is honest work and that's the important thing. If you choose to go to college, study hard and get good grades. Make good friends and be a good friend. Be tolerant and kind. Love others for who they are, not for what you hope to turn them into. If you find someone you want to share your life with, wonderful! But don't get married for any other reason. Do things because it feels right for you, not because someone else thinks you should. Live a well-rounded life. Work hard but play hard too. Do things that bring you joy each day.
Doing all that makes you good. And good enough.