Today is a special merit multiplying day whereby good deeds are increase 1000 times. Remember to do good deeds and accumulate good karma.
The below is a teaching from Lama Zopa Rinpoche (Transforming Problems Into Happiness) on the easiest way to create good karma:
"Simply by rejoicing, without the need for extensive preparation or any special effort, you can accumulate incredible merit, incredible good karma. In one second you can accumulate merit infinite as space. If you really practice it honestly, rejoicing in others is the easiest way to accumulate extensive merit and attain ultimate happiness...
The practice of rejoicing can prevent the arising of pride, jealousy, or anger. Whenever you hear that someone else has been successful, rejoice. Always practice rejoicing for others - whether your friend or your "enemy" - even about samsaric success. For example, when you hear that someone has been successful in business, you should rejoice. When you hear that someone has found a partner, again rejoice. You should think "How wonderful it is that they have found the happiness they were seeking!" Practice feeling as happy for others as you do for yourself. In other words, cherish others as you cherish yourself. Feel happy when others find happiness, as if you yourself had found happiness.
If you cherish only yourself, you cannot experience happiness, but if you cherish others as you cherish yourself, happiness arises naturally... without any need to think of reasons. When something good happens to anyone, you naturally feel happy. Every positive trait is the result of past good actions, and all can be a basis for you to rejoice. When you see someone possessed of physical beauty, think: "How wonderful it is that this person has a beautiful body now as a result of practicing patience and morality in past lives."... If someone is very intelligent or has more understanding of the Dharma than you do, you can rejoice in it as well."