For help in identifying savings potential and keeping an eye on discretionary spend I really recommended You Need A Budget (online).
You start off by entering today's balance in all current and savings accounts then 'allocate' all your money until the next time you get paid. First to immediate essentials and bills, direct debits etc. Then to all the 'lumpy' expenses that aren't regular but still need paying like car insurance. It has a function where you can fix a target date for this. So if you need £300 in six months time for car insurance it will tell you that you need to allocate £50 this month to have enough money in the bank for then. And if you use that £50 for something else it will tell you put aside £100 next month to stay on track.
Once you're done with essentials, if you have money left you allocate it either to discretionary spend - say, coffees out - or to specific savings e.g. house fund (again, you can set a goal of £8k in three years time, or whatever).
THEN - you track your spend (there's a phone app) - every time you buy a coffee or whatever you tap in the value, and which 'budget pot' it comes out of. And every week or two I check bank for the direct debut and stuff and check them off.
I find this helps me in two ways. First, when I sit down on payday and work this out, it helps me think 'do I want to spend £50 on coffees this month or would I rather have a few less and redirect £30 of that to savings?'
Then at the point at which I'm buying the coffee, I can look at my budget pot on my phone and if my allocated coffee find is spent out, I can choose to but the coffee anyway - but then it and me which pot I want to take the money from. You're not physically shuffling money around accounts, but you ate mentally and virtually moving it between pots. This makes it very conscious and explicit in my head- 'I am buying this coffee, and I'm redirecting money from my house fund to do so'. This is almost always true, but easy to let it wash by in the day to day and then wonder why you're not making progress in saving. And it is a much clearer thought process then a vague, guilty 'I really ought to spend less on coffee. Oh well, I haven't had that. many this month, have I?'
It also takes the stress out of car tax renewal month knowing you've set the money aside already :)
And if you're a bit obsessive about stuff like this (as I am) you'll probably find it quite fun. It's definitely satisfying watching savings start to grow. Despite being a good earner, I have always struggled with spending more than I earned, and frittering money - so I always felt broke but with nothing to show for it - no great holidays, no nice car etc. In about 9 months it has taken me from a position of basically using each months salary to pay off last months credit card bill, and having to use my bonus for the lumpy bills like car insurance, to spending within my means each month and, now, putting aside money to front-fund the lumpy bills. I think within a month or two I will have caught up with myself sufficiently that I can start actual saving. So I'm a bit of an evangelist. You're starting from a much better position than me as you're already good with money, but I still think this could help.
Good luck, I'm sure you'll get there!