Light at the end of tunnel

I went swimming today after a long time. I went swimming to find my strength back because I need it tomorrow most. whenever I swim, I get the confident that I can do everything. I make a race with myself to swim the free style from one side of the lane to another side of it, when at the last minute I have difficulty to breath, I tell myself that keep it going, just another moment...just another attempt and finally I am there!...this practice simulates the experience for me that success in life is all about bearing the last moments when you are tired most...the golden rule in life that says: "Never give up"...

I also remember a word from a friend "there is a light at the end of the tunnel"...and this is always true whenever we think that we cannot go further but we must remember that there is a light that will welcome our attempts and hardworking...