It's worthwhile setting a target which is achievable.
I have a wedding later this summer for which I've set a target, for example, and another target for later this year.
Do a weigh-in and chest/waist/bum-measure and based on that set your target weight/size.
Or set a fitness benchmark now and establish a target based on that, for example, looking at the klms per week you run, or a target heart rate.
As BigD said, it's all dependent on if you're looking for better overall fitness, or weight reduction or other targets.

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Bring on Summer!