It depends! What's important to you about the goals you're using Beeminder to track? How much of a financial burden are the repeated derails?
The first question to think about is how you got into the situation where this set of goals became overwhelming. If it's truly the case that nothing in particular has changed about your life (aren't you planning a wedding??), that means your current commitments are above your capabilities - even if it seems like you've been keeping them for a while! I think of my Beeminder goals the same way I do about my effort at work: I intentionally don't work at max effort all the time - maybe only 90% - because I need there to be some room for me to "give 110%" (110% * 90% = 99%, still physically possible!) It's likely the case that on a particularly energetic day you bit off a little more than you could chew by bumping up a rate or starting a new goal, and you've been slowly chipping away at any reserve you had ever since.
But wait, you are planning a wedding, aren't you? Give that its due as the huge life event it is! Even if you're not actively working on wedding-related items on a given day, the start of a marriage involves an incredible amount of effort as you and your spouse-to-be come to terms (consciously or not) with intertwining your lives in such a significant way. You're not going to be able to devote as much attention to your personal goals in the meantime - and that's appropriate, because the time leading up to a marriage is, among other things, time to think about how your goals might change in the context of a life you share with someone else.
I peeked at your goal page, and at least your public-facing goals seem like they may involve a lot of "nice to have" activities - reading, watching movies, etc. If you've found yourself derailing a lot lately, it may be time for some triage on the goals that aren't core to keeping your life running. It's hard to tell from the outside, of course, but it looks like mostly you're not using Beeminder for the most important parts of your life - and maybe some reprioritization is in order.
If money is an issue, start by getting yourself out from under expensive pledges. Then pause or at least reduce your commitments on non-crucial goals. I'd recommend flattening the rate rather to 0 than dropping the pledge, because a $0 pledge doesn't free you from the tracking effort and/or the stress of feeling like you've failed when you derail. That's also why I say a rate of 0 rather than just "easier". If you don't archive the goal, you can still track your efforts if you want, so you won't lose "credit" for anything you manage to do. The other thing this lets you do is figure out the rate you naturally do with tracking only - which will be a good starting point whenever you decide to change the rate again.
I recently made several major life changes in the space of a few months, and I took this approach. I reduced my rates on nearly all of my goals to 0 to give myself space for the physical logistics and also the mental processing. I left three goals running at their normal rate: flossing, exercising, and keeping my inbox empty - all of which are key habits that keep me running day-to-day. The rest of my goals are various levels of "nice to have," and I still haven't upped the rates on all of them. It's been a gradual process as I have the energy and inclination, and I've been surprised at how long it took to feel not-overwhelmed again once the obvious life changes were past.
TL;DR - Think through what your priorities really are for these goals relative to the rest of your life. Then flatten the roads on goals you can do without, until you've found a new balance and have some capacity to spare.