I was looking through my address book today (yes, it is the Christmas card season) and found this quote from one of my dad's books - Prophet of a New Hindu Age. How true the words are.
'The stable, peaceful mind is the best cave. And so one can have inner stability and serenity while going out to perform the services of the world.'
For 2019, why not adopt your own personal mantram and start excavating your own personal cave by training your mind to be stable and peaceful. Once you have excavated it, no one can take it away.