The song received generally positive reviews, with music critics praising its hopeful theme and Lee's composition.

[2][5] She found it "scary to be so vulnerable" and a "weird" outcome for her as she had never written a happy song in her life, having felt before like she needed her fear and woes to write.

[15] Writing in the St. Louis Post-Dispatch, Sara Berry said the song "lays bare Lee's insecurities in an intimate-sounding setting - just her and the piano.

[13] Jon Dolan from Entertainment Weekly wrote that "the deceptively soft" song "flirts again with the dark side, offering 'Drink up sweet decadence / I can't say no to you' and striking a final note of cathartic badness.

[20] A writer for The Boston Globe called it the "lone glimmer in the gloom" in which Lee showcases her "most unclenched and luxurious vocal to date".

[21] Writing for the St. Louis Post-Dispatch, Sara Berry concluded that the album balanced the "scorching rock anthems" with "reflective, piano-heavy ballads" like "Lithium" and "Good Enough", adding that in the latter, Lee bares "insecurities in an intimate-sounding setting.

[22] A writer for Reuters regarded the song "as intense and affecting as anything before it - and this time, Amy Lee's lyric steps from the dark side, reveling in the relief of positivity.

[24] Blender writer Josh Eells viewed "Good Enough" as one of the album's "most touching moments" and "the sound of a woman who may have finally found true love — probably as close to contentment as a death-obsessed goth princess is going to get.

[27] A writer for MTV News found the video to be "dark and cinematic, it's almost as if you swallowed an entire feature length film in 3 minutes.