by Reb Nati at Mystical Paths
Trusting in a Tzaddik in being bitul to the Tzaddik, a path to increase your emunah in Hashem.
Many make mistakes with counting sefiras haomer, myself included. With the mistake comes depression in the failure and giving up on counting altogether. However, it's very important to continue to count even without a bracha. We must do teshuva and continue, if we stop after a mistake then we've lost. We have to overcome this and avoid our own concern and depression. This is the importance of bitul!
From Rebbe Nachman of Breslev's Likutey Eztot (Advice), Pesach:
The days of the month of Nissian are days of repentance like those of Tishrei. Nissan embodies the concept of Tikun HaBrit, guarding the Holy covenant. When you are joyous you can draw the spirit of Nissan, it's joy and holiness, into the whole year. Thus you can make amends for the abuse of Covenant and you will avoid impure experiences... (Likutey Mohsaran II, 5:10).
The Haggadah which we recite on Pesach is a tikkun for the Covenant. The reason why it is recited aloud is because the voice arouses Da'at, the knowledge of Hashem. By reciting the Haggadah aloud we can experience a revelation of pure Da'at. Da'at itself the essence of redemption, because the exile in Egypt came about through the abuse of the holy Covenant, which brought about a distortion of Da'at. The wine of the four cups which we drink on the first night(s) of of Pesach is also a tikun for da'at and for the Holy covenant. (Likutey Moharan I, 20:10). During Pesach when you pray you should cry out loud.
Through the joy we have on Purim, clapping of hands and dancing, we are able to fulfill the mitzvah of counting the omer properly. Then we are able to receive the Torah on Shavout, both the revealed and hidden Torah. Each day of the Omer period is associated with a different aspect of the sefirot. Remez (hint) - On each day everything which everyone in the world is talking about is purely an expression of the particular aspect with which that day is associated. A person with understanding can hear and recognize this if he pays attention to what people are saying.
BS"D - בסיעתא דשמיא