Market price can move exactly opposite the trends, but are still predictable.
Long term yearly trends do not invert, nor do mid-term monthly trends. It is only the short term trends that invert.
These inversions do not affect the monthly trends or the yearly trends and normally will not affect your investments. Only day traders could be affected by phase inversions, although with recent advances I have made by identifying these inversions, we have been able to avoid the inversions.