Struggling with abundance

I”m struggling with an abundance mindset. On the one hand, I want to believe that there is enough and we’ll have plenty.
On the other hand, there is the reality of the amount on our bank account and we don’t have the cash to go swimming with our little boy as we had planned.
It’s hard to keep abundance in mind when dealing with a bank account that doesn’t look very rosy and bills that are piling up. Any tips?