Congratulations, it sounds like you made measurable progress toward your goal. I think the best you can do is embrace the fact that:
1. It's always changing
2. Feel confident in that something that you learn will become relevant again
3. You can't know everything
In addition, find a team that will help you learn and practice everything you are interested in. Look for a company/team where individual engineers have to wear many hats.
1. It's always changing
2. Feel confident in that something that you learn will become relevant again
3. You can't know everything
In addition, find a team that will help you learn and practice everything you are interested in. Look for a company/team where individual engineers have to wear many hats.