Yes, by eating less.
Really measuring portion sizes, and sticking with it. Checking TDEE by age, to make sure target consumption was likely to lead to reduction. Logging everything, so find out things like when in the day I was hungry, and working with that, rather than to a generic plan. Seeing what left me feeling full, and what made me want to eat more.
Cutting out the booze - empty calories plus finding it easier to give in to temptation to nibble was a double whammy worth avoiding.
Rediscovering that hunger is a normal sensation which means you shouid eat something soon - not a reason to have a snack as soon as it's first noticed.
And joining a congenial MN weight loss chat thread. There are usually a few on the go, so quite likely there'll be one where you think you'll 'fit'
I only really took up exercise when I was getting near target, and realised I needed to tone up. That's done great things for my confidence.