PAUL FROM CLEVELAND - Paul , I too was raised a Jehovah's Witness from birth like you. I was going to meetings from birth until age 44 - 6 years ago. I left due to injustices and doubts I had about the " generation " teaching. So I do know how you feel starting a new life and trying to find your niche and trying to find your meaning in life after you thought you were going to live forever. I sympathize. Been where you are at. I felt similar.
You asked : " What gives your life meaning ? " and " Is this it ? " and " How can I put it out of my mind and enjoy life ? " So I'll try to answer your questions in a combined form in at least what I have learned in my 6 years after leaving the witnesses.
What has given my life meaning is appreciating the little things everyday in life that we were too busy to notice as Jehovah's Witnesses. Stop for a minute , breathe deeply in and exhale . Just BREATHING air is a real privilege ! Dude- I was so busy out in service, attending meetings, carrying mikes, giving talks as a witness - I never stopped to observe how FANTASTIC sunsets are , or sunrises ! What gives my life meaning is my relationship with my wonderful wife, my adult son who is 24 and also free to pursue life outside the witnesses. He went to college for awhile too. I get meaning in my life by just being here on this board enjoying helping others to see they can move on after the witnesses. Being a Jehovah's Witness was definitely not " it " as you mentioned. Now that we are not bound by the governing body's demands- we can volunteer in outside groups to help other people. Feed the homeless. Reach out to lonely people who just need a hearing ear or a friend . And do it, why ? NOT to get an " eternal life " reward - but do it because it's the loving, right thing to do ! It makes people feel better, and it makes YOU feel better !
As Changeling mentioned ; There are many interests you have the chance to find out what you enjoy pursuing now . What did you enjoy in High School ? Any subjects you liked ? What do you want to do for a living ? Work ? Would it be possible to take a college course in some interest you enjoy ? What hobbies do you enjoy ? Do you like sports ? Reading ? Golf ? Hiking ? Biking ? Now that you have the time , it will help you to " put out of your mind " negative thoughts by pursuing positive goals for yourself personally you will be able to enjoy your life once again by keeping yourself busy doing what you enjoy in pleasure and work, or school.
So in a nutshell - What gives my life meaning is sharing love with others and receiving love from others who love me unconditionally. My wife and I enjoy living out in the forested Sierra mountains and enjoy the beauty, we enjoy our pet dogs and cats as well ! Keeps us laughing. I'm really too busy to worry about a future death to be honest . I'm too busy enjoying the positives I can get in this life - while we have it ! Remember the old adage the glass is either half full, or half empty. It's how you perceive the world around you. I know the expression is a cliche, but true. You will get what you put out in this life if you give your best effort. And there is A LOT to live for ! So think about what things you enjoy doing ! If you ever want to talk, I'll PM you my number. Take care dude