cheelu, you seem to me to be a people person and I somehow think a good saga type book might suit. Susan Howatch wrote some great ones, they're quite old now but I remember reading Penmarric, The Rich are Different, Cashelmara - if you go on Amazon, you'll probably be able to find them for no more than a penny, second hand, plus postage of around £2-3. You'd also find them in charity shops. They are well written family sagas that span generations. I loved them but reading and what you enjoy is so individual. If you've never read her books, Daphne DuMaurier is another author you might like. She wrote Rebecca, a great book that I think you'd love it. None of these are 'heavy', just really good reads that you can get you teeth into.
No doubt others will have ideas. 