I read this tips online somewhere and modified it to suit me. I recommend it to anyone that wants to rekindle the flame of love or keep it burning fervently. Some of it might sound dumb but it works, trust me. 
 
IF YOU HAVE 10 SECONDS…. Hit pause.  This will come in handy the next time your spouse is really bugging you. Before one unrighteous word flies out of your mouth, FREEZE. Just watch your spouse for 10 seconds. Visualize yourself in his/her shoes. Visualize the moment you said yes to the marriage proposal. Pause the action.
Ten seconds gives you enough time to really decide if your spouse is being a jerk or you are the one overreacting because you don't understand what is happening to your spouse at the moment.
Ten seconds pause will help you make a better decision.
 
IF YOU HAVE A MINUTE… This is from an expert in relationships. If you have a minute, embrace your spouse (even though you actually feel like giving a punch ) gently and gradually  synchronize your breathing with his/hers. Just stand there inhaling and exhaling together, as if you were one being. A minute or two of this, apparently, lowers your inhibitions—and that can help your bonding (caution to home managers, don't do this when you've spent all days doing house chores and you are sweating all over, quick shower should come first ).

IF YOU HAVE 2 MINUTES… Jot down three things your spouse has done lately that you appreciate (OK, one?). Send the list as a love note to your spouse in an email, or pin it behind the bathroom door. Or put it in a place you're sure he/she will surely get it. For men, you can insert it inside the shoe you know he will wear for that day. Or just say it in words like you really mean it. Certainly, if there’s one thing the research on happy long-term couples shows, it’s that they figure out how to accentuate the positive. When you say or list what you appreciate in your spouse, it brings those things more to the forefront of the mind.
 
It may also prompts your spouse to reciprocate.
 
IF YOU HAVE 3 MINUTES… Here’s another good one from Epstein: Standing or sitting fairly close to your partner, start moving your hands, arms, and legs any way you like—but in a fashion that perfectly mimics his. “This is fun but also challenging,” Epstein writes. “You will both feel as if you are moving voluntarily, but your actions are also linked to those of your partner.” See if this doesn’t activate your empathy circuits.
 
IF YOU’VE GOT 5 MINUTES… Try a daily forgiveness ritual. It's like a little shot of immunity to prevent you from fighting. Find a quiet spot to sit, and let these phrases go through your mind: If I have hurt or harmed you, knowing or unknowingly, I ask your forgiveness. If you have hurt or harmed me, knowingly or unknowingly, I forgive you. This might be difficult at first, but if you keep taking the recommended daily dose of this love portion, you'll soon see great improvement in your relationship.
 
So what love formula do you use to make your marriage blissful?