Knowledge workers carry out these processes by taking into account multiple inputs (generally a wide set of unstructured data and information) to perform difficult tasks and make complex decisions among multiple possible ways of doing the work, each one implying different levels of risk and possible benefits. They are dependent on individuals and it is not possible to automate them. One example of a knowledge process is "Marketing a new product". The same steps are followed each time a new product is launched (benchmarking competitors, deciding pricing strategy, planning promotion, etc...), but it is the experience, knowledge and intuition of the people that drive the process to success.
Another tip would be to look in to a so called tax_sheltered plan, these plans are also called 401(k) plans and most times are offered by your employer. It would be wise to join such a program and put as much money as you could possible afford in it. your employer is allowed to put extra money on top of the portion you put in, they will get a tax deduction for this as well so everybody is happy with this type of plan. A final tip could be to give some thought towards investing you money, the way you save is at least as important s how much you save. No matter how much you save just be aware that you need to put something aside if you want to enjoy the golden days with the same, or even more, joy as you did your working life.