it is a BLAST to track this! I've been doing it a few years every month! the cool part is you can see how much it grows month over month on avg (using excel)... So, saving + growth is increasing my net worth at rate of $8,000 - $9,000 per month! seeing that is very motivational..
the excel even shows a gradient bar that tells me what % I am towards my goal (I have 3 goals)... I'm 46% towards my low end goal, 36% towards my mid goal and 26% towards my stretch goal... once I'm at my low end goal that is my 'zero' mark or my freedom mark, I can choose to continue to work or not at the low end.
super fun stuff! Plus if you're tracking enough, setting goals, tracking dividend amounts you can tell really get a solid feeling of progress... if the progress isn't fast enough, you can visually see that you need to step on it some more and increase savings.. or if you're hitting your savings goals, you may want to back off and treat yourself to something...
someday we should get a few of us in some video chats together, share our spreadsheets!