Reducing Stress Levels:
Reducing stress levels is one of the best ways to combat cortisol spikes and keep cortisol levels balanced. While this is a loaded topic, some things you can start to implement right away are lifestyle based. Cutting back on self-destructive vices like smoking or drinking, as well as practices like meditation and regular exercise can have a dramatic impact on stress and cortisol levels.
If you've never meditated before, the best way to start is simply focusing on the breath. This just means feeling the breath of air as it enters your nostrils, and recalibrating back onto that point when you notice you're lost in thought. Every time you correct your course, think of it as "1 rep". Doing this in the morning and before bed can have a profound impact on your stress and cortisol levels.