The Spurs striker is unhappy that his side keep coming close but ending up second in key contests in the league and cup competitions
Harry Kane believes Tottenham must learn how to win the big games after losing 4-2 to Chelsea in the FA Cup semi-final at Wembley.
Mauricio Pochettino's side twice came from behind to draw level with Chelsea before goals from Eden Hazard and Nemanja Matic condemned Spurs to a seventh successive FA Cup semi-final defeat.
Kane admitted he is envious of Tottenham's London rivals' ruthlessness after Chelsea booked their spot in the final despite being dominated for large spells.