How do you tell the difference between what you call 'spiritual practices' and any other thought practices?
You will need to accept that this is just my take on the subject, others are available. I also distinguish 'spiritual' from 'religious'. Religions to me are the variety of beliefs, doctrines and thought practices which have grown over time, often to support a predominant power structure.
My view is that there is one basic 'spiritual' practice which is meditation, but this practice can take many forms. They are mostly designed to promote inner stillness rather than inner agitation associated with thoughts and emotions. By inner stillness, I don't mean inner deadness or dreamless sleep. There are a variety of words associated with this 'inner state' like bliss, ananda, paradise, heaven, love, life, union, all of which arise in consciousness.