In each question, the first and the last sentences of the passage are numbered S1 and S6 respectively. The rest of the passage is split into four parts. These four sentences are jumbled. Read the sentences and identify their correct and logical order.

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S1: It is very easy to acquire bad habits.
P: If we do not continue to do it, we feel unhappy.
Q: The more we do a thing, the more we tend to like doing it.
R: The force of habit should be fought against.
S: This is called the force of habit.
S6: Even good things should be done from time to time only.
The Proper sequence should be: