The gold number range of some of the lyophilic colloids is given below:
A: 0.005 - 0.01, B: 0.15 - 0.25, C: 0.04 - 1.0, D: 15 - 25.
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. that maintaining a positive attitude
Q. even in difficult situations
R. is essential for success
S. and helps overcome obstacles effectively