6 months ago on a whim I booked a 9 day trip to the US to see a close friend there and have a girls road trip. The trip is now 3 weeks away and I really want to cancel as I feel so guilty about leaving my children.
DD will is 3.5 and DS is 2. They will be with DP supported by DM, DMil and a close auntie while I'm away. I regularly work away (once a fortnight and sometimes once a week) but am only gone from 6pm one day til 11pm next day and the children are used to that.
DS is a happy, secure and well attached wee boy. I'm worried this will be disrupted by me being away and I will do irreparable damage to him and he will feel abandoned.
DD is totally different, is prone to anxiety, has a lot of meltdowns and is quite clingy to me. This was really triggered when I was in hospital for 3 days having DS and she never really seems to have recovered from it.
I'm reading what I've written above and can't believe I booked the holiday 
To explain, the friend and I are very close. She lived here in the UK for many years before moving to the US for work. She has visited me yearly 4 years in a row now and I felt it was my turn to go to her. But the idea to book was totally mine.
I have Bipolar II, nothing like normal bipolar - much more mild and consists of mostly depression with the odd period of high mood and energy (not psychotic but certainly believing I can do more than I can and taking on loads of new projects). In my last high spell I signed up for an MSc AND a coaching qualification, started a new business and booked this holiday all in a 1 week period.
My friend only gets 2 weeks holiday a year and has used a week of it for this trip. I don't know what would happen to her holiday allowance if I cancel. She's so excited about the trip.
I'm not worried about the financial costs and I would cover my friends losses too. I just feel like I'm going to be damaging my relationship with her or with my children.
Am I being ridiculous?! I would dearly love to go on the holiday. I know we will have an absolutely fantastic time. I'm exhausted from being a mum, working and all that and this break would be so nice. But I feel so guilty and don't want to damage the kids with being selfish. If I could magically cancel with no consequences I would. I've even wondered about faking an illness but what could it possibly he that would be plausible?
What should I do??