It may be nice to have a deep credit limit, but if you feel that it makes you overspend, you should reduce it. The way to go about it is to contact you credit provider and ask to reduce it. Furthermore, credit card issuers are not allowed to send you invitations to increase your credit limit, so you are more able to resist temptation to have it increased again. Having your credit limit lower will help you save money and keep your financial plan on track.