One thing that I've found really helps me to end the day feeling I've achieved something is to track my time throughout the day, be that time spent on work/family/play. This is something I've toyed with at various times, but never really found a way that works for me. However, at the moment, where work and home life is much more blurred, I realised that I was ending the day feeling I'd not achieved enough at work or with the family, so I thought I'd give it another go.

I personally have a notebook on my work desk, but know others who use a spreadsheet, and I record the start and end time for an activity and a note on what that activity is. Then at the end of the day, or earlier if I want to see how I'm doing, I total up my hours in various categories - record the time for work related activities, and note whether the numbers match how I feel I did - they very rarely do. (Nb - I only do this during the week, and to record any work time I spend at the weekend).

This time sheet also serves as my "ta da" list - my record where I can see what I did actually achieve in my day, which is a nicer way of ending the day than only seeing the items still to be done on my "to do" list. 

I can see that, yes, I did manage to do a significant amount of work in reasonable chunks; yes, I did spend plenty of time with my kids. Or - if that isn't the case, I can see why things were out of balance and what I could try the following day to change that, if appropriate/possible.

I'm not sure I'll end of doing this long term, Laura Vanderkam - who the quote comes from - has been tracking her time for 5 years, but it is certainly helping me at the moment.