Thank you very much for the answers. I think that a lot of the issue is due to my personal views. Or it is a matter of character of mine. I don't really know but I will try to resist this situation and show my best self

Thank you for the reply,
but I see my professor helping my colleague (at least trying to help) but he doesn't help me so much, and I have one and a half year in the PhD before my colleagaue. I don't know what to do, the burnout is close

You're right. It is different and from my perspective, my PhD is more future proof. The problem is mine, but I suppose that both me and my colleague have to get same treatment from my supervisor. I study all day (almost) and no breaks. Even on holidays, I think about my PhD but I think that's not enough. Whereas my colleague just processes according to what they tell him to do

But I think it's unfair to help my professor him instead of us. I have a much more difficult PhD and no support where he has a easier topic and stronger collaborations, and it's not on me to bring new collaborations.

Hello,

I'm currently in my 5th year of PhD and I feel constantly jealous about a co-student, which is in his 5th year. We are in slightly different projects but he is more lucky as a lot of papers got published by his team mates. Addionally, even if we start with the same salary, he got slightly more than me right now. In the meantime, our professor (we've got the same) is more elastic to him than me. He is constantly scold me whereas he doesn't do the same thing to him. I know that my colleague is more tough guy than me but this behaviour doesn't help me and motivate me. What can I do? I think I speak to a wall every time I speak to my professor. In other words, I think my professor appreciates my colleague more than me.