My observation: people don't do well spiritually when they stop participating in corporate worship or attend with high irregularity.
Sometimes there are really powerful reasons for non-attendance. And some people are exceptions, finding Christian fellowship and service in other ways. I've known a couple of people who were thriving spiritually while not attending corporate worship gatherings regularly...for a while.
But for most of us mortals, missing corporate worship is usually due to spiritual drifting, and it's usually spiritually stunting and hazardous.
It's hard to tell people that showing up for corporate worship every week is really important without sounding like a legalist. But it is no more legalistic to make corporate worship a priority in life then it is to have a daily quiet time of Bible reflection and prayer.
How does a person keep this resolution. In part, by deciding less. Decide once that this is what you will do every week. Decide once TO attend every week. Then the only other decision is NOT to attend when you have a really good reason. Don't ever decide whether or not to attend on the weekend.
I wish a lot more people would make this resolution. It could have significant results.