What is worship? If you asked ten people this question you might get ten different answers. Most people might respond by describing acts such as praying, singing, giving, taking communion, etc. These all could be acts of devotion, but they are not necessarily worship.
I’m afraid that many people think they are worshiping if they are doing these (or similar) actions just by virtue of the fact that they are doing them. Their mentality is that I went to church on Sunday, participated in the service, and therefore I worshipped. The fact is that participating or going through the motions does not necessarily mean that you worshipped.