Interesting jobs are, kind of by definition, hard at the beginning: Many interesting and clever things are already in place that you have to learn in a short period of time: not just the big technologies, but a lot of smaller things like tools, environments and a lot of culture.
Inevitably you run out of cool things to learn, and very few jobs can keep challenging you mentally all the time. Almost by definition a job must get more boring over time.
You can do some learning and growing on your own, but that only goes so far: You can write a script and look up stuff and apply it at your job, but can't quite break out a sample project in the new framework.
Almost by definition, the person who can handle coming in at that kind of job and grok it all, can't be the one who does the job for years on end. Enjoy the ebb and flow of the job lifecycle - after a hectic start, settle in and enjoy it for a while.
But then: leave! If the company is smart, they'll put you on a new challenge if you ask. Most likely you'll have to quit and apply somewhere else. Then you will be on 100% of your mental capacity again in no time :)
Inevitably you run out of cool things to learn, and very few jobs can keep challenging you mentally all the time. Almost by definition a job must get more boring over time.
You can do some learning and growing on your own, but that only goes so far: You can write a script and look up stuff and apply it at your job, but can't quite break out a sample project in the new framework.
Almost by definition, the person who can handle coming in at that kind of job and grok it all, can't be the one who does the job for years on end. Enjoy the ebb and flow of the job lifecycle - after a hectic start, settle in and enjoy it for a while.
But then: leave! If the company is smart, they'll put you on a new challenge if you ask. Most likely you'll have to quit and apply somewhere else. Then you will be on 100% of your mental capacity again in no time :)