An investment in knowledge pays the best interest.
One thing we can all do to increase our wealth is to increase our earning capacity. We can do this in a number of ways, and it is likely to occur of its own accord over time anyway, but the biggest problem we all have is that as we increase our earning capacity, we increase our spending capacity too!
For any increase in earnings to have a positive effect on our personal wealth creation, we need to continue to live as though our income has not increased, and to apply the increase to our savings and investments. If we do this, we will experience an exponential improvement in our capacity to build our wealth and to reach our goals and dreams.