Hearing the metronome on 2 & 4 is a refreshing and fun way to practice.
It's always a little challenging to start out, especially if you've never done this before. To limit the amount of frustration you may encounter, make sure you take a tune that you know really well :).
Start out counting with the click, and then play from there. Eventually you will really feel the rhythm on 2 and 4, and you're playing will groove more.