This seems like a fairly straightforward reading on the face of it – you’ve struggled to find balance and in the future, you will.
The Two of Pentacles in the past is struggling to find balance. Queens are typically seen as nurturing, but I prefer to see them as they’re depicted in chess – they have a freedom the king does not; in some respects she’s more powerful than the king. Here I see as having grasped control – you have that balance you’ve been looking for. Temperance in the future would traditionally represents precisely what you’ve sought – balance.
However, there’s another interpretation based on how the cards speak to me. Specifically, how Temperance speaks: I’m a person of extremes. Whatever the issue is, I generally either fully embrace it or thoroughly repudiate it. I don’t know what temperance looks like. I’ve never seen it up close. The card of Temperance, to me, is about confusion. The way I put these meanings together for myself is that your hard-won sense of balance is in danger of toppling.