user2765: I've played the French and Queen's Gambit, which tend to lead to more closed, positional play.  I've played these openings consistently for roughly 25+ years now, with no set opening before then really.  I did try to learn both the Center counter, or Scandinavian, and the Danish early but eventually gave up and played random moves (I was quite young).  After that it was Petrov for a year, then on to closed games.  I'm currently 38 and have been at closed positions now for 25+ years.  By consistent I mean every single game I've played since then.  If it is relevant my USCF is around 1500, with a peak of 1620. 

user-1: My advice is to change openings only if you don't enjoy them and to practice tactics for when a game opens up. This is because:

The aim of the opening is to reach a playable middlegame. You reach a playable middlegame in any reputable opening, whether it is the wide open King's Gambit or the closed Advanced French
If you enjoy the openings you play, stick with them. Chess is a game afterall, and if you are having fun with the openings you use, then that's great!
Most games can be opened up if the opponent wants to do badly enough, so practice tactics to be prepared for open games. Think of the French Exchange Variation for example


user9684: From a strong expert:
Just because I find open games to be more fun, I would suggest playing more open games.  Also a variety of openings will expand your knowledge.  (Looking at your tournament history, you may already have enough knowledge.)  Just like you don't quit smoking in one day, don't switch to overly aggressive opening.  Try the Scotch, Vienna, or Giuoco Piano.  These openings requires the learning of more opening traps, but they should improve your quality of play.
Assuming that you have the time to invest in studying an opening, learn the common positions and plans.  If after trying this style you feel uncomfortable, go back to playing the closed/positional games.  If the game is not fun, it is not worth playing.
When I reached expert level, I switched to a more positional game because I thought this is what was supposed to happen.  I lost many games because I hid my talent.  
Some GM said that he switched to d4 because he got lazy as he got old.  Anna Zatonskih said that with d4, White can make more mistakes before losing the game.  You could be hanging on to the safety of known avenues.

2765: <p>I've played the French and Queen's Gambit, which tend to lead to more closed, positional play.  I've played these openings consistently for roughly 25+ years now, with no set opening before then really.  I did try to learn both the Center counter, or Scandinavian, and the Danish early but eventually gave up and played random moves (I was quite young).  After that it was Petrov for a year, then on to closed games.  I'm currently 38 and have been at closed positions now for 25+ years.  By consistent I mean every single game I've played since then.  If it is relevant my USCF is around 1500, with a peak of 1620. </p>
 -1: <p>My advice is to change openings only if you don't enjoy them and to practice tactics for when a game opens up. This is because:</p>

<ol>
<li>The aim of the opening is to reach a playable middlegame. You reach a playable middlegame in any reputable opening, whether it is the wide open King's Gambit or the closed Advanced French</li>
<li>If you enjoy the openings you play, stick with them. Chess is a game afterall, and if you are having fun with the openings you use, then that's great!</li>
<li>Most games can be opened up if the opponent wants to do badly enough, so practice tactics to be prepared for open games. Think of the French Exchange Variation for example</li>
</ol>
 9684: <p>From a strong expert:</p>

<p>Just because I find open games to be more fun, I would suggest playing more open games.  Also a variety of openings will expand your knowledge.  (Looking at your tournament history, you may already have enough knowledge.)  Just like you don't quit smoking in one day, don't switch to overly aggressive opening.  Try the Scotch, Vienna, or Giuoco Piano.  These openings requires the learning of more opening traps, but they should improve your quality of play.</p>

<p>Assuming that you have the time to invest in studying an opening, learn the common positions and plans.  If after trying this style you feel uncomfortable, go back to playing the closed/positional games.  If the game is not fun, it is not worth playing.</p>

<p>When I reached expert level, I switched to a more positional game because I thought this is what was supposed to happen.  I lost many games because I hid my talent.  </p>

<p>Some GM said that he switched to d4 because he got lazy as he got old.  Anna Zatonskih said that with d4, White can make more mistakes before losing the game.  You could be hanging on to the safety of known avenues.</p>
