Going to necro this as it's a valid question that still gets asked nearly a year on and not answering is just plain rude!

With a character loaded, go into the 'Character' menu and scroll down about half way.

Just above where it lists your current buffs it has a coloured bar representing your experience progression. Before level 50m this represents your standard XP; afterward it represents Champion Point gain. At CP level, the colour also corresponds with which tree your next point will be awarded to (Red for Warrior, Green for Thief and Blue for Mage).

Next to this you will see the text 'You are enlightened' if... well, if you're enlightened, and you'll also see how many XP points will be boosted by the enlightenment you have!

This bar (which is also visible as a smaller version at the bottom of the main in-game menu) will also have a solid colour for XP/CP progression gained and an opaque colour showing how much boosted progression you have.