Answer:
Make us stronger.
Step-by-step explanation:
Of course you will have to write the 2 paragraphs on your own but here's a short explanation I hope can help. I believe that suffering makes us stronger because in suffering you learn from your mistakes, and grow as a person. When your suffering you have to learn and adapt to your situation to work through it, so it can make you a wiser person overall (depending on what the "suffering" is) and it makes you grow for better or worse, therefore, making you stronger. I don't believe suffering leads to success because it's not always that easy to get to success, but making us stronger through suffering could later on lead to success. So I hoped this helped to give you an idea for your paragraphs, don't forget to be creative!