I really struggle with people pleasing at work. My role involves completing quality control on documents other people work on, so I'm the last step in the process. As such, there is often lots of things waiting for me to work on with strict deadlines. My work is the kind that can't be rushed as that defeats the point of quality control, yet I still worry if something is taking me longer than expected that I'm being 'too slow'. I also hate letting colleagues down, and struggle to tell them when I can't take on anything else for the week as my time is already taken up by projects.
Sometimes I get put on the spot during our team meetings, and I find myself agreeing to things on the spot that I know I shouldn't. Other times I get emailed work that I had not agree to take on, and I struggle to reply to colleagues and say so.
I feel guilty taking my lunch break as it means an additional hour I could power through and get more done. I also try and stay online later to try and keep up with it all. We are allowed to log off early on Fridays during the summer, and I haven't done so once as each Friday someone will send me something before they themselves log off early, with something that needs doing by end of day.
How can I be more assertive and less of a people pleaser?