Solution

A man used to complain to his teacher that he couldn’t meditate.
‘I can’t hold my thought on it for long. I start thinking about what we’ll be having for breakfast or about some argument we’ve had in the family or about whether I shall be transferred at work.’
One day the teacher suddenly flared up and shouted, ‘I am a fool to have taken on a fool like you at all!  I’m going to finish with you. Why should I go on?  Come back tomorrow and unless you can give me one good reason why I should still see you, you can take your things and go.’
The pupil tried to stammer out an apology but the teacher cut him short and physically pushed him out.
That night the man couldn’t sleep: he was wondering what he could do to get the teacher to keep him on as his student.  He had great respect for the teacher and really wanted to continue under him.  Next day he brought a present for him and timidly gave it to the attendant who then announced his name. The teacher came out quickly and said, ‘Come in and sit down.  How have you been?’ The man answered, ‘I couldn’t sleep for thinking how I could appeal to you – please keep me on. I can’t think of a good reason, but please keep me on as your student.’
‘You couldn’t sleep for thinking about it? That’s good, that’s what you needed,’ the teacher told him. ‘When you have trouble with your mind, think back to that and meditate with the same concentration. You’ve learned what it is to meditate’.