"BJP is overenthusiastic about winning the general elections this time," Ramdev said at a press conference here.
It needed to be patient, he added, while conceding that there was resentment within the party due to "announcement of candidature of some persons".
The yoga guru also said his support to the saffron party and its prime ministerial candidate Narendra Modi was based on specific issues.
However, he said he was confident that NDA would get an absolute majority, and stated that there was no alternative to Modi now.
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Ramdev also said Aam Aadmi Party leader Arvind Kejriwal would face a disaster if he contested against Modi from Varanasi.
Kejriwal was not talking about Congress's misrule, but had joined hands with the party, Ramdev alleged.
The yoga guru said he had prepared a nine-point "oath letter" which will be signed by all NDA contestants. The letter commits the candidate to bring back the black money and stop corruption, among other things.