The reason most savings plans fail is that they require willpower to work. Willpower is a limited resource. Good financial systems do not require willpower — they make the right behaviour the easy behaviour.
Start with automatic transfers
Set up an automatic transfer to a separate savings account the day your salary arrives. Even 5% is transformative over time. You cannot spend what is not in your current account.
Audit your subscriptions
Open your bank statement and highlight every recurring charge. Most people are surprised to find three or four subscriptions they forgot they had. Cancel anything you have not used in 30 days.
Cook one more meal per week at home
The average restaurant meal costs three to five times more than the equivalent home-cooked version. One extra home-cooked dinner per week saves most people €100-200 per month.
The 24-hour rule for non-essential purchases
For any non-essential item over €30, wait 24 hours before buying. Most impulse desires disappear entirely. For larger purchases, wait 72 hours. The research on this is consistent.
Shop with a list
Supermarkets are designed to make you buy things you did not plan to. A written list (and sticking to it) reduces the average grocery bill by 15-25%.