Remember that the wedding is one day at the start of a life-long commitment. Look beyond the wedding day to the goals you will have as newlyweds. If you want to purchase a house in the next few years, keeping that as a priority throughout the wedding planning process will help you to be prudent about how much you spend on that one day.
Consider whether you really need choral singers and a string quartet at the ceremony and a wedding singer and a DJ at the reception. Releasing doves or butterflies or having a candle-lighting ceremony are all wonderful, but may end-up costing a lot of money. Simplicity saves money and if done well, your wedding may seem more serene and awe-inspiring!