We all want better timing in life, but some people seem to be blessed with it more than others. If you're born with North Node conjunct your 1st house cusp, you can have great timing throughout your life.
The North Node is part of the lunar nodes, which are the points where the orbit of the Moon crosses the ecliptic. There's a North Node and a South Node. The North Node pulls you forward while the South Node pulls you back, hence the North Node giving you good timing.
The 1st house rules you, so the North Node on the 1st house blesses with good timing. The Sun also rules you, so you can see this manifest somewhat with your Sun conjunct the North Node. Mars is the natural ruler of the 1st house, so Mars on the North Node can do it as well.
Pretty much anything conjunct your North Node gets blessed with good timing and energy. It may not always work out with other factors to consider, but the North Node really tries to help you. But overall great timing in life? AC, Sun, Mars.
Bad timing? It's the reverse, and it's conjunctions with the South Node. The South Node is the past karma and baggage, so you have to work on dealing with that karma and baggage to alleviate the "bad luck" the South Node can bring.
Mercury Retrograde in Aries: March - April 2018
March 2018 New & Full Moons
April 2018 New & Full Moons
Jupiter in Scorpio: October 2017 - November 2018
Saturn in Capricorn: December 2017 - March 2020, July - December 2020