Many people are confused by the different traditions, which all have different sayings.
This diagram which I’ve drawn, shows where the real Dhamma taught by the Buddha probably is.
And it is from this basis, of where the true Dhamma probably lies, that we should start our practice.
So by all means, practice compassion, read the Heart Sutra etc.
But imo, one should always reference the intersection illustrated above, and compare one’s practices to those in the true blue space.