But you gotta focus on your first!!! Develop yourself intentionally
You'll be hated after you achieve all of ‘em but don't fold or neglect what you've been doing, it's only proof you're doing something right.
With this in no distant time you will be 10x better than you're.
I think what the OP stated is common knowledge, or it should be obvious. A person can grow even more in different aspects if he invests in himself first. By doing so, you will increase the overall aspect of yourself and be better.
A good example is in trading. If you invest effort and time in learning about trading, polishing your skills, and building your experience, then you will notice the significant changes and development of yourself, and that should always be what traders will do. In fact, even in different aspects of life or fields of life, a person should always be developing themselves to attain new achievements and to do the things they want to do. Don't just stay on what you are; don't be contented to reach as high as you can, so that in the future you will be proud of yourself and have no regrets.
It may be but despite of it, I'm sure many still fail on doing them. So, it's fine if the OP reminds us again about it. True. Before anything else, we should prioritize our selves first because others may not return the favour to us. I see lots of people who are on this scenario and those who are too helpful are only regretting at the end. We already use investing as our first example, so trading must be another example.
It may still be valid since trading can still taught us a lot of lessons that we can apply in the real world. If we are already in a better position, I think it's also fine to stay with it because doing some changes might only affect us negatively.