(A2A) In the tradition with which I am familiar, it is unusual not to do tarot readings for oneself, because: firstly, Tarot is most importantly a tool for self-discovery; and secondly, you can only ultimately learn the real meanings of the cards through practice. A real Tarot reader ought to know what the Tarot cards mean without having to refer to the Little White Book all the time.
You can use any decent Tarot spread like the Celtic Cross, but you should Use ALL the tarot cards at once: don’t resort to the vile practice of removing some of the cards from the deck, and don’t interfere with the cards once you have dealt them. In other words, don’t resort to any of the practices that hucksters use to cheat rubes who come to them for fake readings. Be brutally honest with yourself – that’s how you achieve objectivity.
Whilst you may chose to go to another person to read your Tarot cards for you, I find the idea of insisting on someone go to another person for a reading is deceitful: it encourages slavish dependence at best, and charlatanism at worst.
Source: Alex Sumner’s answer to How can you do a tarot reading on yourself? – Quora