One needs years of very attentive, very careful, very reasonable,very coherent work, organisation, selection, construction, in order to succeed simply in forming, oh, simply this little thing, "one's own way of thinking!"

One believes he has his own way of thinking. Not at all.

It depends totally upon the people one speaks with or the books he has read or on the mood he is in. It depends also on whether you have a good or bad digestion, it depends on whether you are shut up in a room without proper ventilation or whether you are in the open air; it depends whether there is sunshine or rain! You are not aware of it, but you think all kinds of things, completely
different according to a heap of things which have nothing to do with you!

And for this to become coordinated, coherent, logical thought, a long thorough work is necessary.

The Mother : The Sunlit Path p.118