go get github.com/xeonx/timeago

package main

import (
	"time"
	"github.com/xeonx/timeago"
)
	
func main() {
	t := time.Now().Add(42 * time.Second)
	
	s := timeago.English.Format(t)
	//s will contains "less than a minute ago"
	
	//...
}