It depends upon the individual. Usually, income is directly proportionate to happiness. To live a happy and satisfied life, wealth is essential. It helps to maintain a healthy mindset and feelings. If a person is suffering from living below the poverty line then that person might be have depression, anxiety and may clash with other family members. This hurts the family members as well. However, few wealthy businessmen are unhappy due to pressure, loans or, most importantly, a fear of losing their income. In some cases, people are unable to sleep due to this fear which leads to a miserable life. Every topic has pros and cons, and this has too. Even though some people relate their feelings with their income but that's not apt/worthy.