When one door of happiness closes, another opens, but we often look so long at the closed door that we do not see the one that has been opened for us

When something comes to a close in your life, you'll want to remember this quote from Helen Keller:
"When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us."
I have spent way too much time in my life looking back or worrying about when things would come to a close and be in my past. I know that many other people do the same, even though we would be much better off if we heeded the wise words of Helen Keller.

Maybe you're lamenting the ending of a relationship, you're upset about moving, you're concerned about leaving your job for another position or perhaps you're worried about something else entirely different that is ending.
These are all valid things to be sad or concerned about, and you are probably right to feel that way. But while you are a little sad, you should also be looking ahead with hope.
I know that in the past when I had to move away from family or when I had relationships end, I was sad about the happy times that I was leaving behind and I probably dwelled on things for a little too long.
Even now, I am not looking forward to my son graduating from high school in a year and then moving on with his life. What will I do after he is gone? What about all of the fun times that we have together? Who is going to cook me dinner? I know I will be sad about that big change in our lives.
At the same time, though, I should be looking forward to this big change as it will undoubtedly bring some new wonderful experiences.
When I was upset about moving years ago, for example, that all turned out great. I met some amazing people and had numerous great experiences because of all of the moves I have made.
Similarly, when relationships have ended in the past, I have usually been led to find new relationships with great people. I couldn't be happier with where I am in my life right now, and that would not have happened if certain doors had not closed in my past and I had not walked through new doors.
I know that it will be the same for my son and for me after he graduates from high school, and I know it will be the same for you with whatever changes you may be facing in your life.
All through your life you are going to have numerous changes. Always remember, though, that when one door closes another will open. Don't look too long at the door that is closing, instead look happily at the new doors that are opening up new possibilities for you.