Being a big fan of continual growth and always reaching the next level in life. I would say that staying on a growth trajectory means you already have one or you need to set/make one and then stay consistent on it.

Continual growth for me means not only continual learning but also applying what you are learning on real life as quick as possible and learn from the experience. Knowledge alone means nothing if not applied in the specific knowledge area whether it is health, finance, business, relationships, etc...

Knowing your goals and where do you want to go in that specific area of life where you want to grow is the start. Then the hacks comes with sitting the growth plan (and stick to it) to make sure your are spending enough time on a daily basis doing at least one action that gets you closer to your growth/goals.