cut your coat according to your clothcut (your) coat according to (your) cloth
to only buy what you have enough money to pay for.
Of course we'd love a huge expensive house, but you have to cut your coat according to your cloth.
cut (one's) coat according to (one's) cloth
To shop or act in accordance with one's financial limitations. You'll go bankrupt unless you start cutting your coat according to your cloth.
cut your coat according to your cloth
undertake only what you have the money or ability to do and no more. proverb
ˌcut your ˈcoat acˌcording to your ˈcloth
(saying) do only what you have enough money to do and no more: This has not been a good year for us financially, and we must be prepared to cut our coat according to our cloth.