Segulah for Teshuvah
A while back, I met with Rav Nasan Maimon who taught me something from his Rebbe, Rabbi Michel Dorfman, zt'l. He taught me in the name of Rebbe Nachman of Breslov that if one wants to repent he should accustom himself to recite Psalms daily. (5 a day and you can finish the whole book monthly). V'Ele Shemot Bnei Yisrael Habaim - The last letters of each of these words make the word Tehillim (Psalms) the continuation of the verse Mitzraima Et Yaakov Ish UBeito - the last letters of these words is Teshuva. Rebbe Nachman teaches that this is a sign that reciting Tehillim helps a person do Teshuvah. (Hishtapchut HaNefesh)
I can attest to the fact that since I started the practice of reciting 5 perakim of Tehillim a day, I have found that I am able to tap into internal resources that I didn't even know existed to come closer to Hashem and to do Teshuva on past Aveirot.
Unlike many Segulot which act like a key to get what you want, say this and you will be blessed with money, children etc. This method helps a person gain the tools and access the ability to improve himself, get closer to Hashem and as several Sefarim bring down every person's life is in Tehillim so it can as well help a person "find themselves and their mission in this world".
It is truly amazing. Especially powerful when working so hard to keep Shemirat HaEinayim, Shemirat HaMachshava and Shemirat HaBrit.