Although I'm happy to have a very long lifeline that goes to my wrist, I realized that it also has a kind of small fork in up right direction. Does anyone know what this means?

CaraCat

I've read this on the internet. I hope this is what you are looking for:
The life line starts between the thumb and the index finger. It then touches the wrist, curving widely around the thumb. This line indicates longevity, vitality, and the quality of life. A long and regular line indicates an excellent equilibrium and a healthy constitution. If the line is forked at its begining, it shows the person as just, truthful, loyal and dependable. On the other hand, if the line ends in a fork, the person suffers from frail health and experiences a lack of energy. A forked line leading to the Mount of Jupiter is a sign of success, recognition and glory. If the line forks to the Mount of Moon, travel to distant places is indicated. A faint line indicates a life of misery, while a clear line suggests a smooth life. A double line is typical of the security offered by a loved one of the opposite sex. It also indicates a healthy sexual life. Branches in the life line make a strong statement about the fortunes of the individual. While upward branches show achievement, glory and success, drooping branches indicate financial, social and emotional loss. A long and deep line shows an abundance of energy, and single-minded determination to reach goals.