What shouldn't we do when doing the IELTS Reading Part?

Where do we usually find the topic sentence in a paragraph?

Choose the best title for the paragraph starting with this sentence: It may seem incredible, but there is evidence that your name could affect how long you live.

What should we read first?

WHAT IS THE CORRECT HEADING FOR THIS PARAGRAPH: "C Lisa Tse, businesswoman, is modest about her success. She believes it's the people around her that have made the difference to her life. Her parents told her to surround herself with people of good reputation, so that she would be viewed positively, too. And, she adds, if you associate with top professionals, you'll soon learn what makes them successful."

WHAT IS THE CORRECT HEADING OF THIS PARAGRAPH: "Self-presentation and the way we dress may also play a role. For example, a typical pink shirt wearer earns £1,000 more per year than males who wear more sober colours 45 for work. While clothing could simply be a product of personality, another study showed that women who wear make-up are far more likely to be taken seriously than those who don't, demonstrating that appearance itself can bring rewards."

What can be a heading for a paragraph having this topic sentence:

"Although it is undeniable that money, nowadays, is the solution to almost all problems; being rich has never been 100% equivalent to being happy."

If you don't know a word used in a heading, what should you do?