I agree with most of the above and especially that you need height. At the moment, the only "story " that's being told is that the cabinet is your dumping ground. If you have sentimental things, they need to be "honoured" by having space dedicated to them, otherwise they are background clutter. If this is the space you have allocated to them, then never put your daily chores such as paper work and general dumpiing there. If you don't have space to spare and have to use this area as a dumping ground, perhaps elevating the sentimental to another level, as previouslly suggested with shadow box, or grouping the photos on the wall, or you could do a floating shelf above the cabinet to hold your sentimental items. I would make the shelf shorter than the length of the cabinet.
Then you can still use the cabinet top for the other items. If you group the items that belong together, so the wine, decanters and glasses on an attractive tray, they then look like they belong and tell another story and apppear as one item rather than five. If you really need the bench for the dumping site, perhaps get an attractive container with a flip top lid to dump them in or otherwise something attractive that groups the "dump stuf"f and contains it, that way it looks ordered rather than cluttered.
Less is definitely more, remove anything unecessary such as candles so that you can have some empty space.
At least this is an easy makeover!