Hi there I'm about 2 years down the track after lumpectomy, radiation and tamaxafin. I booked a weeks leave on the 5th week of radiation and that was a good idea, also over did self care during this whole time and ended up having 2-3 days on certificate when tiredness got so felt the walk to the bus was a big effort I got acertificate covering entire 6 weeks so basically I took an hour off every day : this was a good idea as I didn't feel I had to make up time. I didn't start tamoxafin until about a month after radiation therapy stopped so I was recovered from one before starting the other. The machine broke down for a few days so I got a break and my energy picked up so that was great morale booster that experience won't last etc best wishes