Concept:The sequence of sentences must flow logically from the opening mantra to the concluding idea, maintaining coherence.
Explanation:S1 introduces the idea "Refuse to be miserable".
R follows, stating that life can be painful but should not be sorrowful — this directly expands on S1.
S then advises to find occasions to be cheerful, which is the practical way to avoid sorrow.
P warns against falling into self‑pity and reminds that responsibility comes to those who feel responsible.
Q talks about challenges being opportunities for the strong to turn failure into success — this naturally follows P's sense of responsibility.
Finally, S6 concludes that this whole approach is the "art of right contact in life".
Thus the correct order after S1 is R, S, P, Q.
Answer:The correct sequence is RSPQ, which corresponds to option A.