Lucid dreaming can be colourful, exciting and all that.
All fine.
But above all, they can be used to tackle and solve inner conflicts, to overcome some of the subconscious issues we all have.
THAT can change a life.

As an extra tip, I would suggest involving wishes on what to dream, what problem to solve. Consciously - and carefully chosen. Focussing on remembering dreams in the process of gradually slumbering away is like preparing for an expedition.
Which it indeed is.

Enjoy!