But I wasn't always this way. There's been plenty of times in my life where I'm motivated and excited for the next thing in life, whether it's learning new tech, or having a child, or trying new ideas, like starting a YouTube channel.
For all the successful people here: How do you keep yourself excited and focused on growth?
When you're young you spend a lot of your time proving that you can achieve what you believe you can achieve - both for yourself and as social proof to everyone else.
Once you've done that, and are comfortable with who you are and no longer feel you need to prove your worth, you need other motivations.
At that point 'growth' may come in different forms.
Go on a holiday, give yourself time to rediscover some interests and passions.
Or just be content that you have achieved what you spent a lot of your time trying to achieve.
Do something that connects you with the greater world. For me? Hiking and traveling in a State with a lifetime of natural wonders to explore.
Try nature. See how amenable it is to you.
(I also play video games... too much)