If you would like to make your life relaxing then you need to take a look at jQuery. jQuery library is a great fit for both newbies and experienced lot. It will not only simplify your coding but also keep it short. Now you don't have to worry about writing repetitive coding and DOM scripting library calls (which tends to get boring in the long run) as jQuery will keep it short and simple (KISS). jQuery can also make your experience with Ajax simpler with functions which would make the language easy to work with.

At the end of the day jQuery will surely make coding a fun job for you. Check out how jQuery can make your coding life a rollercoaster!!