Low points you say.. like the first one, when after several months of my boss throwing a new project at me every other week I realized, that he acually is a chaotic person, not telling me what he prefers I was doing right now, but unexpectedly requires the results after several months from "oh, you need that sample/information/... from XY, I will secure it right away" when actually he never did.
That was when I realized (though it took years actually) I can't wait for him to do anything but I need to do it myself, or push him into things important to do.
Or the last one, when I thought that after all this time I made a hell of a writing block, that I'm not able to even open my dissertation file, without feeling intensive disabling anxiety.
That was when I realized people will never fully understand how much it cost me in the end.
Or some of those inbetween.. when my boss told me four years ago, that situation with grants is serious, and he has funding for two of us PhD students only wor next few months and then wee need to look for job elsewhere, but stay near to finish PhD while working there.. when we were looking up local supermarkets, if they have opening for a weekend workforces.. then after two interviews for a new possition (with the same person, from a nerby institute) the situation changed and we continued fine throughout next years.
That was when I realized this life is just so insecure and unstable, and probably will ever be.
Or the other, when I was seriously "ill and lost a year doubting if I can even continue to work in reseach, or in any field requiring intelectual work..
That was when I realized I need to fuck this doubts, don't give up and focus on the future.
Or many other I forgot.
That was when I realized things are never easy and I better just get used to it..