Or am I jealous?
They are looking to move to a different job and want a 15k salary rise, to take them from fairly well-paid to v well-paid by london standards. They are doing well and am happy for them but not in that league myself so it is difficult at times to properly empathise; they have a mortgage while still in mid 20s, planning a (luxury) wedding and enjoy a good lifestyle yet not satisfied. I get it, who is, but find it hard to put self in their position sometimes when I'm not there at all. Feel like I have to grit my teeth sometimes when I hear about paltry 1500k bonus which will dwindle into nothing because it's taxed! 

I feel like they are lucky by many standards and should appreciate this rather than complain about lifestyle... But happy to hear the opposing side.
I don't think I'm jealous per se. They are a little older and we are in very different life stages.