The state of being unstable or likely to change suddenly.

A lack of firmness or steadiness; the experience of being emotionally or mentally unstable.

मानसिक अस्थिरता

English Usage: Her emotional instability made it difficult for her to maintain relationships.

Hindi Usage: उसकी मानसिक अस्थिरता के कारण उसके लिए रिश्ते बनाए रखना मुश्किल हो गया।