I don't think there's a literally quick way to boost your power up to an average lv76 would have in a snap, but correct me if I'm wrong.
I use a daily power checklist like so:
Ninja tools. Check if they're max leveled.
Personal power of each ninja I use regularly. Farm for fragments to upgrade stars asap. Fully cultivated, fully awakened. Mood is optional.
Equipment. Upgrade, refine, purify, and upgrade magatamas if materials are still available.
Summon runes. Fill and upgrade all 3 circles if materials are available.
8 inner gates runes. You should have around 6 gates unlocked. Fill and upgrade all 4 tabs.
Battle armor. Use up your weekly 6 reward attempts in SA to upgrade.
If you've done all of the above and your power's still stagnant, there's a chance that you level too fast for your power to catch up. I suggest you stop doing bounty missions or any other missions that reward exp only, until you're satisfied with your level to power ratio. This post was last edited by Kaede at 2016-12-26 22:02