Arrange some quiet time for just you and your fiance during the wedding planning process. A romantic date or a weekend away will give you a break from the stress.
Try to keep to no more than 3 colors in your wedding color scheme, one main color and two other contrasting or similar ones.
Keep an online database or spreadsheet with the names of all invitees and RSVPs. Use the same list to note gifts given and thank you notes written.