It's 'lonely at the top'. [=powerful and successful people often have few friends]
He was/felt 'lonely' without his wife and children.
the 'lonely hearts' section of the newspaper
(..) why Dahlia is broken. Get her up, boys. Get her up now! There were good people in the town... Alessa was so lonely and hurt and scared. They should have known better than to hurt her so badly. When you're hurt and scared for so long... (..)2006 Silent Hill