For you to be able to have a life that is meaningful you need to be able understand the story of your life because the way you are able to interepete whatever happens in your life will go a long way in determining how you view yourself and also how you view everything which surrounds you..you have to have a great reflection on your life and be able to create a positive story of your life.
A person should be able to have a sense of purpose if you truly want your life to be so meaningful , you need to understand what motivates you , what keeps you going , what makes your determination to be increased and what is that difference which you want to make in your society?...It might take some time before you can be able to fully understand your sense of purpose but it is very important that you develop a sense of purpose which is clear and bold , lacking sense of purpose will still stop you from having a meaningful life.
You have to consider yourself and also consider your principles for you to have a better life , you should understand how you define the wrongs and the rights , you should understand the importance of having integrity , you should be willing to make an impact in the society , you should be willing to help others grow because as you do that you also will keep growing too..
Your life will be meaningful when you start having a sense of purpose and you are also able to stick to your principles.