Hi Gayathri, for your horoscope where lagana is Moon and Rashi is Leo. Jupiter becomes the 6th lord and the 9th house lord. In your horoscope Jupiter and Rahu are conjoined forming the Guru Chandal dosha. Jupiter transit from second house to the third house. Third house is the house of expansion and confidence. Jupiter is the planet of expansion and belief. Therefore after this transit you will be able to focus more on things you believe is good and true. If you have put things on the sideline and ignored till now, you will take initiative and work towards it. Jupiter is the planet of belief and 3rd house is also the house of speech. You will be more vocal or upright on things you believe.
As Jupiter is actually a functional malefic planet in your horoscope. There will be strong differences with people around you. Despite your best efforts to things for them you are not likely to be complimented for your efforts.