Just to add on to APY and IS:I wish I could share the names to make it more credible.
This is going back a while. A Rebbe of mine repeated that he met a man who had been married for nineteen years and suffered from childlessness. He got a Brocha from a certain Rebbe and had triplets. Then a while later the new father received a phone call one erev Shabbos from the Rebbe’s gabbai, the Rebbe is in the hospital undergoing heart complications. The rebbe wants a brocha from the father!
The father, incredulous, asked the Rebbe “the Rebbe has the power of brochos, not me”. The Rebbe answered him “a brocho comes from the heart. I know you will give me a brocho from the depth of your heart!”
Its still very worthwhile to get a brochah from a true talmid chochom and/or tzadik