A personal mission statement is a person's inspirational vision for one’s life in written form. For me it's supposed to be larger than life, inspiring, and emotive because it is something that is worth making real, rather than the babbling of an egomaniac.
Lord Jesus, teach me to be generous.
Teach me to serve you as you deserve,
To give and not to count the cost,
To fight and not to heed the wounds,
To toil and not to seek for rest,
To labor and not to seek reward,
Except that of knowing that I do your will.