Well believe in yourself.... if your right than than your right, if you wrong than your wrong cause dream you never know what going to be really happening
Most of the time you can easily work out what your dreams mean by thinking about it.
For example if you hear a dog barking, in real life this is related to danger. In dreams it is sometimes thought that it is warning you of a danger in your life.
However other stuff are less obvious. It's best to have one handy
Or just use the internet
That's what I do