An important tool to use when practicing is a metronome.  This is basically a drummer in a little hand held device.  A metronome can give you a click or a beep in tempo.  You are able to speed it up or slow it down and play along with it.  Here are some very good ways to use a metronome.

1.  Learning to switching between chords

2.  Learning a new scale

3.  Learning how to read rhythms

4.  Learning new licks

5.  Learning to solo

These are things that every guitar student does, whether beginner or advanced.  Learning to play in time will move you closer to the realm of advanced playing.  A cool thing to do would be to play along with a metronome and then record yourself.  Listen back and see if you can play in time.  Learning to play in time is a learned skill.  Most folks do not have 24/7 access to a drummer to play with.  A metronome is the next best thing.