Money makes a great slave, but a very poor master.
Good for you for finding a system that works for you!
I have always been on the tight side (I am one of five children born to parents who were brought up during the depression), but I found a nice trick to kick myself into overdrive. I created a spreadsheet of our net worth, and updated it religiously on every payday. Every bank account, every investment - everything that was worth something went on there. I would have included debts as well, but I didn't have any at that point (we were renting at the time).
This was all well and good, but what really motivated me was a second tab of the spreadsheet where I kept track of the historical value of the net worth. I will tell you
absolutely nothing will motivate you more than seeing progress. The steady uptick of the line on that graph brought me more joy than any purchase that I have ever made.
I had originally read about this idea as a motivation for saving for big expenses such as a trip. But I thought that this was kind of dumb since you are simply trading a bunch of small expenses for one big one. A far better use is to use it as a gauge of one's progression toward financial independence.
I reached my goal about 15 years ago, and don't update the graph so often any more. I don't need the motivation as much, the saving is automatic and every expense is weight against the pluses of owning it.
As an aside, I recommend to one and all that they read
Your Money or Your Life. It is an easy read, and puts forward a clear case for living simpler. The main obstacle to most people to saving more money is the belief that this requires sacrifice. Read the book, it makes the case that the expenditure of cash can, and often does decrease your happiness.
Although it is a totally different book, I also highly recommend
The Tightwad Gazette. I don't think that you will find a better book for money saving ideas.
I was fortunate to have come across both books at a critical point in my life, financially speaking. I don't think that I would be in the position that I am today without those books. I cannot recommend them highly enough.