How to motivate yourself to save money?

Start by examining what you spend your money on.

Make a COMPLETE list of EVERYTHING you buy in a day, a week, a month.

How many of those things do you actually NEED to live.  (you need a place to live and you need things like electricity and water - but.....some things are WANTS and not NEEDS)

Now, look at the things on the list that you do NOT need to have to actually live.  How many of those things can you completely give up in order to save some money.  How many of those things can you get a cheaper version of in order to save money.  How much money are you wasting on things you don't even "need" at all.  (maybe you have a subscription to a streaming service that is set to auto pay - but you aren't even watching shows on it - maybe you have other subscriptions to other services but you aren't even using them and you have forgot to cancel them)

After that - you need to decide what is truly important to you.  Are those things you are "wasting" money on important - or is it more important to you to have some money saved back for emergencies.  In the end, it comes down to having the willpower to leave the money alone.  But the first place to start is by having priorities on what you really want to be spending your money on in the first place.  Trim  your expenses and save the excess.  

BTW - many people have shopping issues.  They go either online or to a store and "must have" that cute top or those cool shoes or whatever it is - they just must have it.  Then it gets home and sits in their closet and might get worn once or twice.  DON'T be a shopaholic.  Only buy what you need and what you will actually wear or use.  Be sure you examine your shopping habits and what you actually do with those things that you buy on impulse.  In fact - avoid shopping unless you have a specific purchase that you NEED.  

Understand that you should not live beyond your means.

How can you use money wisely?

“First sit down and calculate the expense.”—Luke 14:28.

WHAT THE BIBLE SAYS Use money in a way that has God’s approval. (Luke 16:9) It is wise to use money responsibly and honestly. (Hebrews 13:18) To avoid the burden of living beyond your means, “let your way of life be free of the love of money.”—Hebrews 13:5.

Although the Bible does not condemn debt, it warns: “The borrower is a slave to the lender.” (Proverbs 22:7) Avoid impulse buying, because “all who are hasty surely head for poverty.” (Proverbs 21:5) Instead, “set something aside according to [your] own means” and save money for what is important to you.—1 Corinthians 16:2.