There are fifty days from going out of Egypt till receiving the Torah on Sinai, and one counts them as he counts the days to his birthday, for on that day the world was created, at least according to one view.
There are two reasons for this counting (sefirah): to arouse in oneself the love for Torah, and to purify and prepare oneself for the receiving of the Torah. In each of these days one can reach a completely new spiritual level, since each of these days has the power of eight. Thus they are are a blueprint for the year. Everyone may encounter in these days difficulties corresponding to his spiritual nature.
The key to each day is in the Sefirot that it represents. For example, today is the fifth day of the counting, Hod in Chesed, or Praise in Love. On it one should concentrate on praising God, making up for others who do not do so, and this will bring him to love God. Thus he is correcting Love through Praise.
Art: Louis Charles Moeller - The Appraiser