Once you have worked out how your time is split during the day it’s easier to say where the wastage is. (Time management 1 and 2)
Often times you can be distracted by other people who you do not report to. Your colleagues nice as they are can sometimes drain your time and eventually your energy as you struggle to cope with the amount of work you have.
Learning to push back on people is one of the best skills you will develop when trying to reclaim your working day. If the perpetrators are the same people day in and day out then perhaps it’s time for a conversation with them discussing what your role is and your expectations of them. This doesn’t have to be confrontational and often times your colleagues have no idea that you are already under time pressures without additional work.