It's important that you're both pulling in the same direction. One of my favourite things is plotting and scheming with my DH, whether it's choosing furniture for our house, talking about where we're going on holiday or planning what we'd like to do when we retire. It gives you a feeling of permanence and stability, and great intimacy.
Very important to make time for one another. My DH and I go out at least once a week on a 'date' even if it's just for a couple of drinks at our local. We need time away from the kids and the TV to talk to each other properly. We often go to bed early for the same reason, watch TV in bed and snuggle up close - it's lovely, and helps the intimacy to be normal and natural.
If problems crop up and they inevitably will, you have to remember that if we all ditched our loved ones the minute they messed up, none of us would have any close relationships at all.
And I think there's no point unless you are trying to build one another, working to help each other acheive what we want in life, together. Giving your partner's dreams as much importance as your own, and he yours.
None of this works if only one of you does it long term although sometimes one partner has to carry the other for a while if they are going through a tough patch.