Concentrate on an event or feeling which has stuck in your mind - it doesn't have to be unusual or earth-shattering.
It could be an object that has significance for you, such as a favourite toy from childhood or an old piece of clothing. Alternatively it might be a recollection of a time you felt a powerful emotion, such as fear or pride.
These are much more interesting than long sections of description about minor details of a holiday. That is not to say that you cannot write about a holiday, but you should concentrate on the part of it that affected you. Readers are not likely to be interested in every detail.