A man pays what he owes to others. Are you really considering buying something selfish when you owe people money who have helped you out in the past? Are you really going to buy that thing you desire before you pay your bills and obligations?
No!! The mature thing to do is defer your desires and pay others what you owe.
J- Jesus first
O- Others second
Y- Yourself last
Matthew 7:12 (NET)
12 In everything, treat others as you would want them to treat you, for this fulfills the law and the prophets.
Romans 13:7 (NET)
7 Pay everyone what is owed: taxes to whom taxes are due, revenue to whom revenue is due, respect to whom respect is due, honor to whom honor is due.