Um why does it always take me so long?

Ok so I haven't worked on my quilted wall hanging in about a month. Just because I kinda get bored and the part I have to do is by hand right now. I have to use a decorative stitch to sew the hearts on. but I did one and then looked at it from a far. And none of the stitches were even or parallel. So I had to take it out and do it over. So I get kinda iffy when I think of sewing the rest on. but I think I need to soon so I can have it finished before its been a year. Like with my table runner.