Last year we had a PhD student who had exceptionally good postdoc supervision, an excellent project, no major setbacks whatsoever, published first author twice in good journals- and just couldn't understand why we other PhDs where struggling so much .... now she's working in a different lab, and things are not going good for her and she's developed a stress related skin condition and had to take some time off.
... I feel a itzy little bit of schadenfreude (i.e. Happiness at someone elses misfortune)now - does that make me a bad person??