Chess novice can improve his/her game instantly, if following four point thinking process is followed in every chess move he/she plays:
1) Avoid en prise blunders
Right after opponent's move, think which of your pieces are under direct attack and your opponent can capture them in one move.
2) Find en prise blunders
Look at the board, after opponent’s move, and note which of your opponent’s pieces, you can capture.
3) Chess vision defense
Right after opponent's move, look at the board and think which of your pieces can be forked, skewered, or pinned on his following move.
4) Chess vision offense
Before you move, note which of your opponent's pieces can be forked, skewered, or pinned.