If you develop a pure and sincere motivation, if you are motivated by a wish to help on the basis of kindness, compassion, and respect, then you can carry on any kind of work, in any field, and function more effectively.
Not only is it the case that happy people are more willing to help others, but as I generally point out, helping others is the best way to help yourself, the best way to promote your own happiness. It is you, yourself, who will receive the benefit.
In today’s materialistic world there is a risk of people becoming slaves to money, as though they were simply cogs in a huge money-making machine. This does nothing for human dignity, freedom, and genuine well-being. Wealth should serve humanity, and not the other way around.