It partly depends on what's difficult about the chords (are there lots of barre chords or long reaches, etc.?). If you're modifying the chord fingerings for ease of playing the individual chords, you may be doing yourself a disservice. Concentrate on fingering the chords so that the transitions are easiest. Songs are not successions of chords so much as successions of chord _changes_. Also consider using different inversions (formations) for the chords, so, fo example, if you need a Bb chord in a song in D, try using the D that's barred at the 5th fret ("A" position above the barre) so you're only one fret away from the barred Bb position (6th fret barre, "E" above the barre). Thinking things out ahead of time can make all the difference.

The suggestion to use a capo is a good one, too, if it turns out that a majority of the problem chords would "go away" if you were capoed, even if it changed some of the basic chords to more difficult positions.

Good luck. I tend toward simpler chords for my songs, partly because it's easier to put a song over if you're not struggling with the instrument, and partly because I want other folks to feel like playing my songs, and the harder the chords, the less this is likely.

Bob Clayton