In a large bowl, using either a hand mixer or a stand mixer with the paddle attachment, beat the cream cheese and sugar together on med-high speed until creamy and smooth, about 2 minutes. Add the sour cream, vanilla and lemon juice and beat until fully mixed together. Then add the eggs one at a time, beating after each addition until just incorporated. Once the final egg is incorporated, stop mixing! Over-mixing could cause it to deflate or crack.