1. Don’t participate, merely consume.
2. Criticize your leadership.
3.Don’t spend time with your church outside of the church building.
4. Believe that everything should be about you and for you, all the time.
5. Be unhappy with the fact that it isn’t perfect.
http://www.shaneblackshear.com/5-ways-to-be-unsatisfied-with-your-church/
I would add when a person has outgrown the ministry of that assembly.
For instance: Often those who have gone to higher education training - in particular that which is offered by good Biblical universities - the person no longer can be sustained upon the milk of the word. They need meat in which another church may bring to the plate.
In that case, it is well and good that the person seek an assembly in which they may continue to grow.
This is in no way being critical of the other church, but practicing discernment of the spiritual needs of that person and even that person's family.
Some might suggest the person should stay and enhance the level of teaching in that assembly.
Unfortunately, when leadership is feeding milk to the assembly as a constant diet, the above suggestion doesn't work that way. Eventually, there will be a disagreement, there will be unity of one camp in contrast to another camp, and there will be a destruction of harmony.
The wise student of Scriptures will seek that area in which they may grow in wisdom and knowledge of the Scriptures - the meat - not the milk.