One good thing to notice is what instument do you "hear " and cant stop thinking about??? Something you are " called to "..   Its amazing in the 60's and early 70's I gave a girl friend and then a year later my brother a banjo; each before realizing I really wanted to play the banjo.. As Chip said above its easiest to play the instrument you really like .. To that I would add that different people have natural tendencies.. cattsfiiddle said it was hard for her to play non classical fiddle . She may have gotten used to reading music and has a harder time just going with it ... without the dots. ( I know my wife Erica has that difficulty)
       I am a rythum person . So after drums as a kid Banjo was my first instrument .. It came quickly for me because I heard the rythum of the thing.. Blues guitar was an off-shoot from that and English dance tunes came next in open tuning guitar..All from the inpitus of dance .How people danced to the music was my door way to the rythum of it . I cant play morris tunes without remembering My wife in a Boston Morris team and how high they jumped and where in the rythum of the tune they leaped ..
       So what might seem a hard thing for one may be an easy jumping off place for another. Keeping in touch with what feels natural to you will help you find the easiest path to your music. .What instrument cant you get away from ??? . All the best , guy