You need a plan to be generous with your talents in your time in retirement. By having a plan, being a volunteer positively impacts you and outlines your goals for the future. When you have plan in line, you will be able to more effectively accomplish your goals and look forward to your retirement. People spend a great deal of their lives planning for retirement, but if you do not take the appropriate care to consider what you will do during that time, it can be a very frustrating transition. 
A recent report by the Corporation for National and Community Service identified that there is a strong relationship between health and volunteering. Those who volunteer in their retirement years have greater functional ability, lower mortality rates and lower rates of depression later in life when compared with those who do not volunteer.
Mentoring and teaching are two positive ways to make investments of your time in your future. Planning to be generous with the wealth you have accumulated over the course of your life can also help you and your loved ones significantly. For example, you will be able to chart a plan going forward for how you will pass on your assets that you have spent your entire life working to collect.
Consulting with an experienced estate planning attorney is strongly recommended if you find yourself in this situation.