When a person thinks of ministry, they shouldn't think of doing things, however this is typically the thought that comes to mind. Ministry is something that is supposed to be integrated into our lives. If you say however that you aren't called to ministry, I beg to differ. In the book below, if you read through it, you will see what I mean.
As I have grown in my walk with Christ I have come to understand that it's not about the amount of things to do as stated in Ephesians 2:8-9.
The way our brains work we need to do things in order to gain acceptance, to feel like we have accomplished things in order to show what we are. With Christ and our relationship, its not about quantity, it's about quality. James 2:18 backs this statement up. So what we need to realize is that no matter how good something is, if we are strung out among several different "ministries" you aren't being affective. To be affective you need to focus on the quality of what you are doing, not the quantity.