I am a young researcher, and recently, I find that the drive to publish and advance my career has created an unhealthy mindset. In particular, I find that when I have a good idea, I am worried that someone will have the same idea, carry out the analysis, and publish before I do. While this worry has greatly speeded up my research, sometimes I feel it is unhealthy, in that my work becomes more sloppy, my analysis is less careful, I check for errors less, and as a result I'm more prone to making mistakes. I think this is an undesirable outcome, because it can potentially reduce the quality of my research results.
However, the tradeoff is real - the more time one spends vetting one's results for accuracy and making improvements large or small, the later one publishes, and the risk of getting preempted is higher. Even if one is still able to publish, not being the first will reduce the impact of your publication.
I am interested in hearing what others think about this, and approaches to dealing with and think about this issue, to have a healthy mindset and research environment.