I am called to every child that is hurting, every person who does not know Jesus, to serve any church of which I am a part, to do my best at whatever job I am in, to give my money away anyone who needs it, and to pursue every single calling I have on my life from the Bible and from Jesus no matter how I am feeling.
When I know and belong to Jesus, I will know His voice; when I know His voice, I will hear Him when He calls; if I hear Him when He calls, that is the definition of a "calling." It all starts with a relationship with Him, let's not skip that part!