Most of my luck and wealth (and I'm guessing the same applies to many of the posters on this thread) comes from having been born in a rich, peaceful, secure country with a strong welfare safety net. So, not Palestine, not DRC or any of the other hell-holes in the world. And to a decent, kind family - not rich, by any means, but always in work and able to pay the bills. This is just random chance - why would I feel guilty about it? Grateful, yes, but how guilty?
A big slice of my wealth has come from buying property in the 90s, at a point when it was still possible (in my case, by getting a second job, and saving like mad) to buy in London on a fairly lowly public sector salary at 3-4 times annual income. And then the market went up and up, so big profits, which enabled me to upsize and so on. Again, big slice of random luck - I don't feel guilty about buying a house when I did, but neither do I feel clever for having profited from a rising house market.
Over the last 25 years I've had jobs that have sometimes required me to work very hard, and mostly haven't. And over the last 15 I've earned 2-3 times the national average for the effort I've put in. Again, I don't feel particularly guilty about that - should I? My husband earns around 4 times the national average, but he's putting in 14 hour days and making decisions that affect big organisations, their employees and customers. And he has worked his backside off over many years to get where he is. So, no, I don't feel guilty about any of it really. We both pay a fair whack of tax, we both volunteer and donate to charity. Of course, we could do lots more, but we're not bloodsucking limpets either.
I would add that I'm of a generation that did benefit from much wider social provision, and I'd like to see more of that coming back - particularly affordable housing, in work benefits, and really excellent universal primary and secondary education. And better vocational education.