Holiday or no holiday??

I know that AI meds are considered more effective than tamoxifen, but tamoxifen is also considered very effective, especially in the first few years. I can't see it'll make much difference to wait a couple of months to switch. I do not think you're being self centred at all. You're entitled to look forward to things and enjoy yourself. If life's not enjoyable what's the point of treatment? Of course, your oncologist may have specific reasons for your treatment plan and you should, without a doubt, trust his/her judgement on it. I hope you thoroughly enjoy your festive season either way! All the best xxxooo