Fail, end & no

Kuva Margit Mannila
If you fail, never give up because F.A.I.L. means "First Attempt In Learning". 
End is not the end, in fact E.N.D. means "Effort Never Dies". 
If you get no as an answer, remember N.O. means "Next Opportunity". So let´s be positive.
Source: Positiivarit, Ajatusten aamiainen 12.1.2016.