Saurabh 
Jupiter is a planet of luck, optimism, success, and generosity. Jupiter brings joy to life.In Vedic Astrology , Jupiter is considered as Guru (Teacher) of all Devta Planets (Sun, Moon, Mars).
Jupiter has always been associated with growth and expansion. In mythology, Jupiter was considered the ruler of heaven, the supreme god of the gods, an omnipotent and good patron, symbolizing dignity, honor, and wisdom.
Brihaspati (Guru) Mantra
देवानां च ऋषीणां च गुरुं कांचनसंनिभम्।
बुद्धिभूतं त्रिलोकशं तं नमामि बहस्पतिम्।।
DEVANAM CHA RISHINAM CHA GURUM KANCHAN SANNIBHAM ||
BUDDHI BHOOTAM TRILOKESHAM TAM NAMAMI BRIHASPATIM ||
Meaning
I pray down and bow to Lord Jupiter
who is the teacher of the Gods and the Sages.
The One with the Golden Complexion,
who controls the three divinities,
the one with supreme intelligence
and Preceptor to Gods I pray to you
5 Effects this Mantra has on your life
1. Happiness
Jupiter is the significator of happiness.
The first things that you will notice is that you are happy without any reason or any materialism associated.
2. Knowledge
Do you know someone who has immense knowledge not only related to his profession but also diverse areas ?
Probably he has a strong Jupiter.
Jupiter is the significator of knowledge and this mantra would increase your thirst for knowledge
and help you expand your expanse of knowledge
3. Wisdom
“Knowing yourself is the beginning of all wisdom.”― Aristotle
Your wisdom will expand and you will start noticing things you never did,
specially related to life and death and existence.
You will have deeper understanding of your inner self
4. Morality
“Always do what is right. It will gratify half of mankind and astound the other.”― Mark Twain
Deeper understanding of your dharma , the duties .
Strength to do what is right and not what you desire.
5. Respect
“Knowledge will give you power, but character respect.”- Bruce Lee
You will command more respect ,
not because of your power or financial status,
but just being the righteous you !