Thought-forms and Physicality

[OpalE]

What's LHP mean?

Also, do you think this may  be behind the success of those who practice altar magics, such as people using deity or ancestor altars and tributing them with such things as Joss paper for manifestation and wisdom seeking purposes?

LHP means Left Hand Path. It’s the service-to-self polarity described in the Law of One.
RHP means Right Hand Path, which is the positive service-to-others polarity.

It depends on the user. I’m not quite sure what you’re asking in the second part of the question.

Does the middle pillar then mean you are not polarizing?

I don't think Ra's LHP and RHP correspond to the Tree's:

Questioner: I was looking at a diagram of the advancement of magical practices starting from Malkuth and ending at Kether. I was wondering if these corresponded to the colors or the densities with Malkuth as one, Yesod as two, Hod and Netzach being three, Tiphareth four, and so on. Is this correct?

Ra: I am Ra. This is basically incorrect although you are upon the correct track of thinking. Each of these stations has a complex number and shading of energy centers as well as some part in various balances; the lower, the middle, the high, and the total balance. Thus there are complex colors or rays and complex charges, if you will, in each station.

Questioner: Does the left-hand path of this represent the service-to-self path and the right-hand path the service-to-others?

Ra: I am Ra. This will be the last full query of this working.

This is incorrect. These stations are relationships. Each path has these relationships offered. The intent of the practitioner in working with these powerful concepts determines the polarity of the working. The tools are the tools.