To dream that you have tears in your eyes is a positive sign. You are finally beginning to heal from a traumatic event. Tears may also indicate that you will soon experience a trying time in your life.
To dream that others have tears in their eyes is meant to show you that the pain and sorrow you feel is in regards to the people you surround yourself with.
To see a single teardrop is indicative of a lesson you have learned, and a reminder of the wisdom you gained from it.