I am not sure, but I have always pursued this kind of work by default and aggressively. Of course there will always be ups and downs, but when it stops feeling

I am not sure, but I have always pursued this kind of work by default and aggressively. Of course there will always be ups and downs, but when it stops feeling interesting, meaningful, and challenging for a prolonged period of time, I generally move on (or switch teams/projects!). But while it remains overall interesting and meaningful, I stay and hold on to it for as long as I possibly can. This has meant that I haven't job-hopped very much to climb the salary ladder, but have been very engaged and interested in every position. It's been a worthwhile tradeoff.