Whether. we are ready or not to receive direct training from a qualified Spiritual Guide, depends really on our perception of him. If we view him as merely an ordinary human being like us, we will see him through the mirror of our ordinary deluded mind,and will not be able to take his wrathful methods in training us.
If, on the other hand, we can see him as a Buddha(indeed, as the Lamrim says, he is an emanation of a Buddha),and hold that view of him in strong faith and trust, then we are ready for his methods of training us(even if that includes his ignoring us or ridiculing us). We will then see the great compassion behind all his actions.
Even if we lack the merits to see him as a Buddha, we can (as the Lamrim says) train ourselves to see him as one. We begin by focusing on his good qualities. I also wish to add here that we should also focus on his kindness to us and to all his students, in fact to all beings near and far.