Pain isn’t always a pain. Sometimes it can actually feel good.
It is impossible to avoid pain while seeking pleasure because pain and pleasure are the two sides of the same coin.
Pain can be both physical and mental.
For eg, a woman gives birth knowing the process would be painful. But then she relishes the pleasure of raising the child.
Another example can be, a man may constantly think about losing the money in debts but it can be proactively stopped if he had an idea. He constantly pains him and if it doesn't happen he is just happy with what all he has got.
A new research suggests, people experience pleasure during a painful stimulus if the stimulus turns out to be less bad than what they expected it to be.