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Morphy games do still help, and will always do (ideas don't get old, and I think it was Botwinnik who said that Morphy's treatment of open positions was so good that basically nothing new has been discovered in that field after him).

As a player who staled for a long time due to lack of aggression (fearing tactics, fearing theory, fearing quick defeats), I suggest to pick up very open opening lines and gambits for a while until you feel comfortable with open positions and attacking play. If you don't feel comfortable with the resulting positions and start losing games, it means everything is going well: you're not doing it to feel comfortable, you're doing it to expand you chess limits. The scotch is fine, but personally i would play 1.e4 e5 as black for a while.

Well i will try king and latvian gambit seems interesting,this will probably help  

KG is fine (but scotch was alright too) Stay away from the latvian; stick to sound gambits, the goal is learning how anb when to attack, not attacking randomly regardless or whether the positions calls for it or not. As black you should probably be happy with active defences since there are not many sound gambits. You might try the two knights against the italian for example (which is actually a gambit in the Ng5 mainline), and maybe the classical berlin (3...Nf6 4.O-O Bc5) against the spanish. Or just seek inspiration from some masters of the past: look for the games of an aggressive grandmaster you like (morphy might still be fine) and see how he handled the black pieces.

Thanks,scotch gambit will be my primary then,since im not familiar with him,but there is not much  lines.I will study king gambit trough Morphy games.

I taught the scotch gambit to my girlfriend with the same purpose and she has been able to beat me with it several times. No mean feat considering that in theory she is rated 300 points lower than me! It's easy to play and rather instructive since many e4 e5 idea appear very clearly in this line. I think it's a good choice.

Unfortunately like many people think, Aggression is not a very useful tool, It has its uses don't get me wrong, But Aggression usually leads to lack of focus or rage, which can easily take your balance and focus away from the game and turn you from a tactical genius into a little kid just taking pieces on the board because it looks fun. Get my drift? Try keep a balance, Be Calm in your mind, Be Aggressive in your tactics, making sure that you know what you are doing fully. Put yourself up as much as you can while putting your opponent down at the same time, Do this and you will win every chess match you ever play successfully. Why? Even if you do not win the match, You will enjoy the match. This is the whole idea behind Chess, not to find out who is the next Magnus or Houdini, but to have fun remember that!

i couldnt find balance ,so I must try attacking method.

Desperation is not better then calculation ;)