Remember the JWs publication "Life Does Have A Purpose"? Their purpose was to knock lots of doors and count hours of time.
Well how did that work out for you?
It's your life so it's your purpose.
Explore the world around you both in travel and in print. Get involved in a charity which strikes a chord with your soul. Be it animal or people or planet earth. You can find fulfilment in the little things you are doing to make this world a better place for the next generation. In this way you do not have to wait for a 1,000 years to pass by to see good results for all your hard work.
Sit down and watch the sun setting. Life's meaning is for you to decide.