1) A return to previously held values of decency.
2) If you talk about getting back to basics, you are suggesting that people have become too concerned with complicated details or new theories, and that they should concentrate on simple, important ideas or activities.
3) brass tacks (informal) core, essentials, facts, fundamentals, hard facts, necessaries, nitty-gritty (informal) nuts and bolts (informal) practicalities, principles, rudiments
After knee surgery Lisa had a long road BACK TO BASICS, her recovery and healing not only her injury but her state of mind. She's finally herself again.